Lb7 duramax code u1800. DTCs U1800, and U2104 are not set.

Lb7 duramax code u1800 Purposely bought one with "newer" injectors. S. DTC P0370, U1800, B2960. I had a issue with my 2002 doing that and Pulled code and it is U1800. 1L it now has an 03 Lb7 in it. Duramax LB7 with Allison Transmission Edge Juice with attitude AFE Cold air Intake 4in. * I have a U1800 code and zero rail pressure when cranking. About 9 months ago, I noticed that my CEL came on (code P0711 transmission fluid temp sensor A circuit range/performance) and the transmission temperature gauge stopped If so then do ohm test on the injectors from the 20? codes to see if one is open, shorted to ground, or shorted injector. Plugged back in and she fires right up. Good ole P0234 overboost. 2002 LB7 codes p0380 and p0540 Thread starter Plumbed1; Start date Jan 16, 2016; Forums. rwood64083 194 Replies. Ron Nielson 216 Replies Duramax First Generation: 2001-2004 (LB7) help please u1800 and no go. It indicates that there is a problem with the Controller Area Network (CAN) serial data circuits. You can expect each plug to cost between $70 and $150. I looked under the hood, and two yellow wires were chewed through on the top delphi connector on the driver's side of the engine compartment. Jump to Latest Now the mechanic says that i have a single code U1800C and that none of his subscription services can tell him anything about this code. 2L Diesel Engine Suspension & Steering LB7, EFI tuned, fass150. Loud Knock and Black Smoke. All 3 fuse blocks and looked at under wiring of fuses under hood and . 2004 Silverado 4x4 2500 lb7 Efi live 5ps Fass lift pump (previous owner bypassed oem fuel pump New ficm New engine harness and ECM TCM harness Because we are in the secret itstheecmclubandyounotinvited club. Browse Categories Answer Questions . The U1800 code is set when no comm between ECU and FICM. 2003 Chevy 4500 6. Wisconsin certified emissions state inspector I need the flow charts for an 03 duramax with codes p0090 and u1800? Tim&#039;s Auto Repair. Its throwing codes p0374, p1261, u1800. From all out performance builds running 8 second ¼ mile territory, to 01-04. Save Share Reply Quote Like . Jump to Latest 17K views 13 Hi guys after a bit of help diagnosing my truck, getting a u1800 code that I can't get to bottom of. mp06011999 284 Where can you learn more about P0700 codes in your Duramax? Code P0700, DuramaxForum. Top Contributors this Month View All. was wondering if anyone knew what the codes ment? U2104, U2105, PO700, U1800, U2106, 4" straight exhaust, DSP5. Have it all back together is one code U1800 now my ficm is plugged in and I've looked at wiring right by alternator and all looked good but I'm wondering how do I test to see if the ficm just crapped out on me LB7 Code U1800 FCIM wire chafe General Discussions 01-04. Bought a 2002 duramax two years ago. Anyone had this before and what was the fix? checked fuses relays and all wires are has anyone had this code? i posted on here a while ago about my truck crank but no start its been down for 2 months now from what i can find the U1800 is a loss of Check the wiring harness and make sure it hasn't rubbed through first and that all the grounds on the engine/batteries are good and tight and clean. I fixed a pinched wire (all 3) that ran to the turbo boost sensor at the manifold where the intake horn was. Checked the harness & plug for these 2 injectors had come loose. 5 LB7 Duramax Powertrain Need help diagnosing P0192 code. Truck is tuned on EFI Live for over a year now and has been running great until this issue. We strive to keep this the #1 forum for tech and information while continuing the push for new and exciting tech on the Duramax platform. 5 LB7 Duramax Powertrain Water under the hood causing P1226 and U1800???? It wouldn't start. 8K views 1 reply Every search on the u1800 code comes up with the truck crank no start that I found. truck sputters and dies while driving. 2L Diesel Engine Duramax Third Generation: 2006-2007. 2011 3500HD 4x4 - EFI Live by Kory Willis, 4" exhaust, EGR blocked, Insight CTS2, AirDog 01-04. ArdyC Discussion starter. gmc502 67 Replies. Wasn't my problem but mine is a 2002. 2001-2004 (LB7) Duramax Second Generation: 2004. I was driving back to the shop when I hear a loud pop and the truck start to run like shit, like it was only hitting on a few cylinder. I would check the P0700 is the TCM requesting a MIL (Malfunction Indicator Light aka: "check engine"). Answered by Chris (aka-Moose) in 17 mins 3 years ago. DTCs U1800 and P2149. M. It had to have the pedal at 50% before it was start to rev. If you pulled over and shifted from D to R, it sounded like the driveline was going to fall out. I have ground but am not getting power. All the 700 code does is tell the ECM "something's wrong" and to illuminate the MIL. after clearing the codes they apperaed back when racing the engine. Put a scanner on it & got codes for injectors 6 & 8. Please help code p0238. EK_LB7 Discussion starter. only codes are pcm u1800 and pcm 0090 We strive to keep this the #1 forum for tech and information while continuing the push for new and exciting tech on the Duramax platform. Cleared codes, current DTC U1800. 5 years ago from a Chevrolet dealer, and as far as I know it is stock, with the exception of a cold air intake. Truck is a California emissions truck. Chevy 04. Jump to Latest I'm a dumba$$. r/Duramax. aggietb. I have a 04 lb7 California emissions truck myself with the same u1800 code. ADMIN MOD Fuel Injector Control Module bad? I have a 2003 LB7 Duramax. t. I was getting a P0101 code took it to the '05 Duramax - ECSB, T-bars cranked up, 2" blocks in the rear, Bilstein 5100 shocks, EFI Live by PPEI, Silverline 4'' stainless turbo back, Tint, 33x12. I have a 2003 Sierra Duramax and the engine light came on and three codes p0700, u2104, u2105 I changed the nsbu and it went off and shifted really smooth for a day or 2 then the light came back on and shifts hard and shifts at higher rpms like it’s in tow mode. By chatting and providing personal info, you understand and agree I am having issues with a u1800 and p0090 code on my 2001 duramax with the lb7. 5 LB7 Duramax Powertrain 02 lb7 wont start. pestman1 Discussion starter. 5 LB7 Duramax Powertrain truck throwing codes. 5 LB7 Duramax Powertrain New Member Introductions Build Need help asap to resolve this issue. But after I cleared them and attempted to start it again they don’t come Code u1800. Duramax First Generation: 2001-2004 (LB7) Loss of communications with ecm,pcm, ficm etc. We looked for obvious things, chaffed wires, fuses 03 LB7 shift problem/codes keeps coming back. Anyone had this before and what was the fix? checked fuses relays and I replaced the fuel filter housing as well and it primes up good and hard. Jump to Latest 42K views The duramax I bought had a couple U codes in it, like lost communication with TCM and BCM or something. ChevyTech77 175 Replies. 2003 Silverado 2500HD LT 4x4, 6. 7K views 6 checked fuses and everything, finally it threw a u1800 code. LB7 and Allison Transmission Issues Thread starter akhenaton22; Start date Dec 9, 2016; Forums. Truck got a p0193 code. P. 6 DURMAX CRANK NO START CODE U1800 Found ficm burn replace 175 amp fuse still no start - Cars & Trucks question. Save Share 2002 Chevrolet Silverado K3500 LT 6. Jump to Latest 15K views 13 replies 5 participants last post by Dmaxlineman Mar 16, 2013. 01-04. com was founded in 2006 and created a so I got this 02 chevy 3500 dually with 6. The code specifically refers to a loss of communication with the Fuel Injector Control Module. 1) Gear indicator light on dash do not work. 5 LB7 Duramax Powertrain LB7 died then 5 codes!! Jump to Latest 3K views 3 replies 2 participants last post by SC-D-MAX May 11, 2014. I have a 06 lbz duramax. Introductions We strive to keep this the #1 forum for tech and information while continuing the push for new and exciting tech on the Duramax platform. AMEDEE. 2500. Ron Nielson 236 Replies. Top 2001 6. 2L Diesel Engine Suspension & Steering - 2001 - 2010 01-04. The cruise control still worked, it rolled through all the Customer: i have a crank no start with code U1800 LB7 Duramax injector harness Mechanic's Assistant: Have you checked the engine's fuel supply? Are the spark plugs, fuel pump, and ignition all working? Customer: its a diesel there r no spark plugs Mechanic's Assistant: What's the year and model of your GM? Customer: 2001 chevy 3500 diesel Mechanic's Assistant: OK. The code came back as U1800. 6 lb7! cranks no start! replaced starter, has 2 new batteries, replaced fuel filter and housing, oil changed, crank shaft sensor, key relearned, using autel scanner it shows desired / Now I scanned for codes and I get U1800 and P0090 then I erase the codes and scanned again and it came up with U1800 and P0090 again. From all out performance builds running 8 second ¼ mile I recently got the check engine light, and went to Auto Zone to get the code. Jump to Latest I'm not sure if you've done this yet, but when I bought my 02 Duramax, it had the 380 code. 02ecsb lb7/zf6 284k Stock intake pro fab intake horn Stock exaust ppe boost valve P0102 code that I can't get rid off Efi live not on the truck yet . Jump to Latest Also, after having a U1800 code myself a few years ago, what he says about the chaffed wires in the harness to the FICM seems to be a VERY common problem. I've intermittently had the ABS/Brake light on for the last few years along with the check engine light. 2020. General Discussion. Duramax Diesel engine RPO codes include: LB7. 03 duramax no start. truck starts and goes fine when plugged in over night. From there I checked the bale connectors on the LH valve cover, the FICM, TCM & ECM connectors - all appeared good. My 2500HD of 118K miles starting throwing network codes this week. Go to Duramax r/Duramax. Jump to Latest Clear the codes on my edge juice, restart it and it runs fine? FFWD to next morning. I found a p1000 code but not u1000 dtc. Yes I am getting the four injector codes. 6L LB7 Duramax’s most common problems. And the truck seemed to go into a wierd shift pattern. 5 LB7 Duramax Powertrain P0380+p0540. Jump to Latest I have a U1300 code stored in my OBDII my CEL light isn't hen i hook my OBDII reader up. We could see if the pressure is dropping, or not climbing. Any ideas?? General Discussions 01-04. I just had my first no-start issue. 6 duramax (LB7) all stock (no mods) Save Share Reply Quote Like. 32 posts · Joined 2012 Add to quote; Only show this user #1 · Oct 4, 2012. 02 K2500 HD 4DR SB You have a LB7? Google "Duramax P0201, P0204, P0206, P0207, P1261" lots to read DTCs U1800, and U2104 are not set. New part came in and after installing it I noticed the above codes and the following issues. 5 LB7 Duramax Powertrain U1300 code stored. 6 diesel chevy duramax code po370 6. 6L Duramax LB7 EFI Live V2, self-made custom tune 2005 2001 Chevy 2500HD LB7 Duramax 6. Im still getting the same thing even after clearing the codes. Failure to communicate with fuel injector control module. Jump to Latest Pulled code and it is U1800. Code U1800. Mechanic's Assistant chat. 6l duramax diesel (lb7)) c/k-truck heavy duty (gvw >8500) engine diagnostic parameters 2001file9. On the other hand, the entire glow plug control module can The most common cause of the p0093 code I've seen is the CP3 getting weak. 6 duramax (LB7) all stock (no mods) Google the code and "duramax", and the you-tube vid will show up in the results. 5 (LBZ & LLY) Top Contributors this Month 03 lb7 getting p0089 fuel pressure regulator 1 performance code and p0088 fuel rail/ system pressure too high code. 6l LB7 Duramax Crew Cab DRW. Getting a p0090 and u1800. Its a communications code, usually a module failure or wiring issue. This code is set when the engine control module cannot communicate wi 2003 Silverado w/ LB7 Let me start out with that the truck did have a Bullydog monitor which I've unhooked. mp06011999 220 Replies. i was able to pull a U1024 code before my edge stopped communicating. 2L Diesel Engine Suspension & Steering - 2001 Subject:07057 -- SPECIAL COVERAGE ADJUSTMENT - ENGINE GLOW PLUGModels:2002-04 Chevrolet Silverado 2002-04 GMC Sierra Equipped with 6. Got an SES light and checked with code reader. ChevyTech77 151 Replies. I Have a 2002 chevy 4x4 LB7 completely stock. Scanned and had u1800. I have a code u1800 for no communication between ecm and ficm. Had it towed to the dealership and they diagnosed it as a faulty PCM and replaced it. Jump to Latest 16K views My 01 LB7 had the same code after changing the fuel filter, tried everything to fix it per recommendations on the forum. Displayed trouble code p1626. Some I cannot read. I can prime it and shoot some starting fluid, but still no fire. It is a crank no start condition, with 2 codes that have come up, a P0090 (fuel pressure regulator) and U1800 (ficm - no communication). ^ DTCs U1800, and U2104 are not set. Those were the last things done to the truck to my knowledge beside new xfer case. doc 2001file9. Jump to Latest I did find a previous U1800 and U0100 code that worries me though. You can use your scanner to log rail pressure while causing the truck to set the code. Ron Nielson 211 Replies. 2004 lb7 LT Edition Duramax 4 inch silverline exhaust with 5 inch tip banks intake system no programmer yet that weak batteries may have something to do with the communication problem between the FICM and the ECM causing the U1800 code. It's the only code I'm getting also and reran all power and ground wires with the batteries. Question: Tags #electrical #lb7 #nocrank #nostart. ashton. The troubleshooting flow chart says that if both of these codes come up together, to go straight to the ficm. MeBucko. It cannot hold pressure when under harder acceleration or at higher speeds under load, or passing, or towing uphill. LB7 Crank No start. 02 lb7 completely stock except for small lift pump and 3" exhaust. U1800? Ficm? Jump to Latest 4. I will start with cleaning the MAF sensor. com/eyvo_auto/Subscribe: I recently started getting a check engine light for code P0102 on my 02 LB7. This morning I disconnected batteries. I'm getting: U2104 CAN Bus Reset Counter Overrun U2105 ECS Comm lost U1800 FICM comm loss '02 2500HD LB7 - Need your help/advice before I take 'er to the local Chevy dealer. 4. Ron Nielson 226 Replies. 3,205 Satisfied Customers. May 13, 2012 Duramaxdiesels. Found no fuses. 3K views Scanned it using Torque Pro App. We have a 2002 Sierra that we have replaced parts with and narrowed it down to the ecm having the issue internally. Members Online • Mr2Drinks. Replacing just the glow plug relay may cost as little as $50. Trany is hard shifting PLEASE HELP. 6 duramax (LB7) all stock (no mods) There seem to be a good amount of treads with this code. When I pull the codes I get the typical P0700 and I get a U2106 (lost data link between the Allison TCM and the Truck's ECM). someone said it just needs to dry out, but its been down for over two months. Top Contributors this Inconsistent Rough Idle, No Codes. New codes are C0550, P1550, C0201, U1800 and still seeing the U1000 also. panel, no speedometer reading, no reading on the tranny temp gauge, and the brake light is on. Air leak, low pressure supply line Fuel injector/s Scanner giving wrong codes I have been getting the U1024 code quite a bit in the last few weeks, which means Lost Comm with TCM. Jump to Latest my 2001 LB7 is throwing codes. The truck runs great. 5 LB7 Duramax Powertrain 2001 duramax code p0370. 5L Diesel Engine Duramax First Generation: 2001-2004 (LB7) Duramax Second Generation: 2004. I did a search here in the forums, and found out that it means Loss Of Communications with Fuel Injector Control Module (FICM). I will verify, but a NOM TCM will likely cost around $1k. Took out an aftermarket (relay style) auto starter and cobbled in aftermarket radio. 5 LB7 Duramax Powertrain 01-04. 30 years ASE Master L1 GM certified. It's 4wd. 5 LLY, 2X, shell, XDR, MikeL Heavy duty up-grade, 6spd, TransGo, deep pan, de-badged, 65 Gallon replacement Aero tank, LBZ-mp, Kennedy pump, shimmed, Pre-fuel LB7 DURAMAX PRIMING PROBLEM. DTC U1800? and other codes. 1K views The U1800 code is set when no comm between ECU and FICM. 50R17 Mickey Thompson MTZ mounted on MKW-27 17x9 wheels. Cleared the code with my banks IQ,code came back. 5 (LBZ & LLY) Top Contributors this Month 2003 LB7 Duramax FASS lift pump. ASE certified tech ADVANCED LEVEL SPECIALIST. Had a harness built by Ben Tyler at Bt Diesel works. Hass87 Discussion starter. i thought it was the fpr so i replaced it but the codes and defueling came back. No start Duramax code P0370. 2003 LB7 2500HD 6 speed manual -Sold- 2010 Camaro SS EFI live, Magnaflow exhaust -sold- (LB7) Duramax Second Generation: 2004. Fix Ecm? Jump to Latest 384 views 2 2001 Silverado 3500 - has codes u1800 u2104 u2106, researched that most of time this combination of codes pops up, it is from the Can circuit, ficm or Tcm. I have ground but am not getting power and if I disconnect the ecm it still gets a very mild ground sent from the FICM Mechanic's Assistant: How long have you been experiencing power issues? Does the power come back on eventually? U1800 Code - Lost Communications With Fuel Injector Control Module General Discussions 01-04. After several trips to the dealer and this past week in the shop the problem is fixed. P0090- fuel pressure high P0193- fuel pressure sensor high voltage P0540- air intake heater P1626- unknown U1800- unknown U1026-unknown U1152-unknown U1041 Getting the u1800 code on my lb7, put in a new ficm, ran for a day now it won't start. I will Ohm the P0700 is the TCM requesting a MIL (Malfunction Indicator Light aka: "check engine"). 6L LB7 Duramax problems and how to fix them. If you look these codes up, it is a comm failure between the ECM and the FICM. 5 LB7 Duramax Powertrain U1024 code and electrical issues. rwood64083 198 Replies. rwood64083 202 Replies. But today I started my truck and then went to head back inside and the truck stalled and won't start. AVS Forum I now get a code P0540 which is the Intake air heater circuit, and a code U1800 which is CAN bus communication. Customer: 2003 Chevy 4500 6. 5 LB7 Performance Parts Discussion No Start? Code - P0374. ) I ran both continuity test and voltage drop test on the power and ground to the FICM, no problem identified. 34 posts · Joined 2018 Add to quote; Only show this user My truck is a 2004 silverado 3500 with the LB7 engine in it. 5 LB7 Duramax Powertrain New Member Introductions Build Threads Exterior. On my 2003 lb7 . Here are the six most common issues with the 6. 5 LB7 Duramax Powertrain. Scanned and had u1800 By chatting and providing I am having issues with a u1800 and p0090 code on my 2001 duramax with the lb7. Sort by Oldest first Oldest first Newest first Most reactions. 02 Ecsb zf6/lb7 284k Efi live by duramax tuner 5in exhaust into 6in miter cut stack Profab intake horn Stock air intake Glow shift gauges Code: U1800 Modules: Description: Lost Communications With Fuel Injector Control Module (FICM) (LB7) Duramax Second Generation: 2004. Jump to Latest Got codes pulled (p0380, u1800, u2104, u2106, u1301, u1000, u1016) have been looking through all the wiring and fuses. I am also now showing code p0090 which comes back to a faulty fuel circuit from what I have read on here it could be the fpr I replaced that fpr and she will still just crank 04 LB7 crank no start with possibl u1800 code. 6. Since the owner had also reported a fuel gauge malfunction, I successfully completed a gauge sweep and checked for powertrain “P” codes, body control “B” codes and 01-04. Come join the discussion about modifications, towing, classifieds, troubleshooting, maintenance, and more! From my googling I have not found anyone else with this problem it is completely intermittent between shutdowns new ecm new ficm new harnesses still act Im getting u1800 u2104 u2106 codes on my 02 chevy duramax its shifts at high rpms. com Thread; P0700 Limp Code??? DuramaxDiesels. 57diesel 141 Replies. It's an 03 LB7. So i hooked up scan tool on to it and the codes says P0090 (fuel pressure regulator problem), PO335 (crank position sensor), and U1800 (lost communication with fuel injection module). 5 LB7 Duramax Powertrain LB7 No Start. Applications: 2001-Early 2004 01-04. What does the U1000 Duramax code mean? It means class 2 communication fault conditions. Here is our guide to the 7 most common 6. LB7 Duramax Injectors. 5 (LBZ & LLY) Top Contributors this Month View All. Tim&#039;s Auto Repair. Have owned a repair 01-04. 5 LB7 Duramax Powertrain A ton of "u" codes. 57diesel 135 Replies. Jump to Latest 3. Took apart and blew out all wire connectors I can see. Going to get the batteries tested 01-04. Save Share Reply Quote Like. I trailered it home and checked all top engine harness connections along with codes and all I get is a u1800. Cars & Trucks 2003 GMC duramax 3500 has codes p0370 u1800 p0489 p0404 p0089 p0101 wont start. 6, 165k miles, 4" Exhaust Edge w/ Attidude Monitor Air Hog K & N air filter Never thrown a code but finally did it 3 times in 15 miles while towing my 39' toyhauler. However, if you have to replace the glow plugs, the price will go up. 7am my time (California) and I start my truck to go to work and runs normal, driving to work, pull up to a stop sign about 1/4 mile away from my work, engine light 01-04. I thought maybe the baro pressure sensor was bad, so I replaced the one on the passenger side behind the fuel filter. From all out performance builds running 8 second ¼ mile territory, to 2000hp sled pullers and all the way back to the average guy looking Ron, you seem to be the guru on every forum I go to looking for this p0193 code. DTC U1800, U2104, or U2106 will set, depending on what communication is lost. The other night the truck started ok and ran for a few seconds but then died and hasn't restarted since. Attachments. Truck now has 258,000 miles. 6L sub-section of the Service Manual. R. I replaced the crank position sensor but still won't start! (LB7) Duramax Second Generation: 2004. All the instances of this on various diesel sites people find wires rubbed bare and grounded A forum community dedicated to Chevy and GMC Duramax diesel owners and enthusiasts. thats all i've done to the truck for now. From what I remember, 2003-2004 are the ones that suffer the chaffed wires thing the 01-04. Duramaxdiesels. 2003 lb7 6. U1800 code when stuttering. Chevy / GMC Duramax 01-04. LB7 & U1800 no start after replacing the injectors. Preliminary check on the wiring and fuses revealed nothing, but I don't have power on pin 118 Injector Inspecting the harness usually caused the fault to disappear (for a while), before it reared it's head and killed the truck instantly. Gideon 01 LB7 General Discussions 01-04. Transmission P0700, U2106 four week battle - Fixed . The only code I'm getting is a p0090 something with the fuel pressure regulator. let it run for a bit and everything seemed fine then all of a sudden died. No mods on truck and a little over 60k on the clock. doc fault code monitoring method sensed parameter acceptable operating range and rationality primary malfunction detection parameters secondary monitoring parameters and conditions monitoring time length The p0380 duramax trouble code indicates a problem within a heater circuit. Ireplaced the MAF sensor last week with no luck. I have probably spent 30 minutes cranking so I'm almost certain it's not a air issue (also I have a lift pump so I doubt) 2003 2500HD 6. Hey Ernie Rutherford, 01-04. My buddy hooked up jumper cables and it fired right up. Did i short out my ficm or do i need to let it dry out more?? 2002 Chevrolet Silverado K3500 LT 6. Googled the code to find out it mean lost communication with FICM. 2004 Silverado Cali lb7, Airdog ll 165, fresh sticks at 325k, Rick Fletes Dsp 5 on v2, 33x12. Welcome to Duramax Diesels. It would throw P0700 and U2106. Help, New Truck and P0700, U2104, U2105, and U2106 Codes . 84 posts · Joined 2011 Add to quote Code: U1800 Modules: Description: Lost Communications With Fuel Injector Control Module (FICM) Is that the DTC you getting? 2001-2004 (LB7) Duramax Second Generation: 2004. 5 LB7 Duramax Powertrain FICM Problems need help!! . 6 Duramax U1800 code ficm not responding Crank no start. Chase What Causes P0540 Code on Duramax? There can be several reasons behind detecting p0540 in your vehicle with the Duramax engine. I went to plug my CTS monitor in and when I did I got a big pop backfire along with white smoke and injector knock. Pulling the codes once I got fresh batteries and bcm and that hooked back up. Truck randomly popped a P0651 code along with what I believe was a P237 code. Your truck may have a Z71 sticker on the side of the bed indicating an off-road package; that is an example of an RPO code. After a month of work with no luck I decided to try a new FICM but thought it was a little expensive to take the chance so I Tried again and the pass key lock blinked several times and the truck started. read this article for more information. 19 posts · Joined 2018 Add to quote; Only show this Got the engine in and cranking and i have a code p0370 any ideas guys? blk smoke lb7 <-----Lots of green $ Nov 8, 2010 5,694 0 36 57 belvidere,ill. I don't think I had the P0700, and my tranny hasn't shifted weird and haven't got the CEL. Save Share 01-04. Some of the most common reasons are discussed as follows: Faulty Heater Element. There is another code in the TCM that you need to pulled the code off my edge insight, gave me code u1800. truck was dufueling and throwing these codes. rwood64083 193 Replies. 5 LB7 Forums. The engine is running. 5 nitto at on 20 inch American Racing 20x10 wheels, Stage 5 Built Transmission by Mike Cole with triple disc billet low stall converter, 4 inch Injen cold air intake, The U1800 code is a Loss of Communication Diagnostic Trouble Code (DTC). Hello, I have a 2003 Duramax, 185k miles. That doesn’t mean the LB7 Duramax isn’t a great truck though. Jump to Latest 2003 2500HD 6. 5 (LBZ 01-04. Aaron@LDS. Have owned a repair shop for 25 yrs. Jump to Latest 6. I replaced the glow plug controller and went ahead and put new glow plugs in and it cleared it. Here is a link of it crankingCranking LB7 . 0 Reply. Now I’m getting codes P0651 and P2228 (Baro sensor). Jump to Latest monitor doesn't want to recognize the vehicle and refuses to connect as well as my scanner. 5 LB7 Duramax Powertrain P1404 code 2002 lb7. Please help! possible FICM failure. I have replaced 2 FICMs so far, and repaired dozens with the wires chafed at the alt bracket. mp06011999 242 Replies P0875 and P0700 Codes in 02' LB7 Transmission. G. 2003 2500HD 6. Air dog 100 lift pump, Duramax Gives me a P0370 code. Save Share General Discussions 01-04. Ron Nielson 232 Replies. I'm not sure if the codes are related, but I'm getting a C0550 and P0103 codes. 5 (LBZ & LLY) Top Contributors this Month McCrown, did you ever find out what was the problem. Garrett cassell Discussion starter. Loaded a tune onto truck, truck ran fine. Jump to Latest 4K views 13 replies Reason I bring that up is I now have a code u1800 which comes back to the ficm. pulled codes and got p0201-04-06-07 and a u1800 code pulled my edge off and didn't have any problems from then on. P0335 code, No Start. Jump to Latest 6K Then on my way home the cel light came on and I looked through my cts2 and it has a bunch of communication codes, p0700, u1000, u1800, u2104,u2106, u2105. 6 LB7 Diesel Engine G104, G105 - Left Battery Ground G102 - Right Battery Ground 2003 2500HD LS CC/LB 4x4 Duramax/Allison Completely Stock 01-04. I pulled the radio fuse to download the tune. 17 posts · Joined 2021 Add to quote Some codes that came up included u1800, p0090, p0193,p0380, p0540. Should i be worried and how do i get rid 01-04. By chatting and providing personal info, you I need the flow charts for an 03 duramax with codes p0090 and u1800? 11. com Thread; Again, this is a great place to start I have my project running now and it is throwing some codes, I am a little confused is the 0090 code the fuel rail pressure sensor or the control valve? Thanks. until last night was leaving the in laws and started my truck let it run loaded all my stuff 01-04. 7K views 4 replies I recently got the check engine light, and went to Auto Zone to get the code. If it is a U code, clearing the code isnt going to help you out. The probable causes and solution behind the p0380 duramax code lb7 are pointed at the table below. ^ The engine is running. 5. Chris (aka-Moose) 24 years of experience diagnosing & repairing. 1 2. mp06011999 226 Replies. Jump to Latest Runs great, idles great and then it just dies and gets harder to crank every time only code I have now is U1800 again . 6L Duramax(TM) Diesel Engine (VIN 1 - RPO LB7) This bulletin is being issued to revise DTC P0201 - P0208 in the Engine Controls - 6. Jump to Latest (LB7) Duramax Second Generation: 2004. . The main 01-04. Jump to Latest 12K views When it threw the codes it sounded like a thunk, clunk in driveline. 6L Diesel V8 (RPO LB7 - VIN 1) Engine; and California Emissions (YF5/NE1), or Clean Fuel Emissions (VCL) Condition Some customers of 2002-04 model year Chevrolet Silverado; and GMC Sierra The cost of repairing a P0380 code on Duramax can vary depending on the severity of the problem. 5 LB7 Duramax Powertrain Infamous codes P0202 P0203 P0205 P0208 P2149. 687 posts · Joined 2016 Add to quote; Only show this user #2 2003 2500HD 6. After reseting the codes the 3rd time they never came back on again. (LB7) Duramax Second Generation: 2004. First off the truck was an 8. Jump to Latest 13K views 11 Can a code p0238 put the truck in limp mode only code pulling up and truck will not go pass 1900rpm Thanks for the help 01-04. 2L Diesel Engine Suspension & Steering - 2001 - 2010. Big thanks to him. 2L Diesel Engine Suspension & Steering - 2001 01-04. I've seen threads on chafes at the alt bracket, under the fuse box, and issues with the bail It is fixed!! 03 duramax crew cab LB7. lb7 trouble codes. This means that the module is not able to exchange operating information and 01-04. Ron Nielson - Most of the information I provide relates directly to my 2008 LMM - Your truck may be a little (or a lot) different 2008 Silverado LT, Crew Cab, 2WD,LB a buddy has an 04 lb7. We strive to keep this the #1 forum for tech and 01-04. 6l v8 LB7 Duramax DieselInstagram: https://www. so far i have disconnected both batteries, checked fuses, looked for rubbed through wires, cleaned Just double checked for codes and found a U1800 from when it died on the freeway. General Discussions 01-04. My scanner gave me these stored codes U1800, P0090, P0089, and P0404. Recommended Communities. I have the duramax LB7, it is building fuel in the oil and the engine is clacking. Anyway i went through the whole process of key cycles so it can re learn the password. I would check the wiring over again just to be sure, not just at the alt area. mp06011999 237 Replies. 5 LB7 Duramax Powertrain U1800 after coolant hose burst. Restarted the edge and it connected. rwood64083 307 Replies. got the following Been sitting since last Sep/Oct with crank/no start. 5 LB7 Duramax Powertrain P2227 code will not clear!! Jump to Latest Truck runs great but has a p2227 code. Jump to Latest 9. Ron Nielson 312 Replies. 57diesel 125 01-04. 5 2003 LB7 Duramax EFI live tune FASS Fuel pump US Gear Exhaust Brake Mag-Hytec Deep Transmission Pan Just a few common U**** codes u1000, u0105, u1016, u1041, u1800, u2104,u2105, u2106, 2020 GMC Sierra SLT 3500 CC/SB L5P 3/14/20 Payload 3726lbs. Jump to Latest 16K is the truck cranking at all? and the code if you didnt know it means (P0374 Timing Ref Hi U1800 I cleared the codes & still no start. 2k views 0 u1800=tcm?? 02 lb7 ec/sb ls 4x4 tuff country leveling kit, bilistien 5100 shocks, hummer wheels wrapeed w/ cooper st maxx, optima red tops, sway bar end link, firestone ride rite air bags w/ firestone compresser, tie rod reinforcements, reinforcement tie rod ends General Discussion \ code po370 6. 5 lb7 duramax powertrain. Potential causes and solutions behind this OBD-II standard trouble code popping up are discussed here. When I got out and popped the hood, the oil filler cap was gone and now I have these codes for the injectors and a unknown code(P1262). AVS Forum Customer: I am having issues with a u1800 and p0090 code on my 2001 duramax with the lb7. Truck is the one Does it come back if you clear it? Check the two large engine bale connectors on the drivers side for pushed back or bent/loose pins. So maybe I was chasing my tail with fuel issues when I may have an injection component problem. Also check the harness and Pulled the codes and the codes are; P0700 U2105 U2106 U1800 6. U1800 Chevrolet Diagnostic Trouble Code (DTC) Definition, Causes and Diagnosis. Jump to Latest General Discussions 01-04. 684 posts · 04 LB7 crank no start with possibl u1800 code. 2) Trans fluid temp guage not working. I guess their is no Communications With Fuel Injector Control Module and that will also give me a P0090? (LB7) Duramax Second Generation: 2004. I replaced the fp sensor, fpr, fuel filters, new batteries (truck was due for them) I shot wiring on the fuel pressure sensor. Jump to Latest 27K views 16 replies Stats on the truck. instagram. A few Duramax forums said it’s my FICM, any chance it could be the connection at the FICM rather Diagnostic challenges with a GM Duramax: Limp mode, fuel injectors, and the complexities of modern automotive technology explored in this story. Ran U1800 diag by SI 2000 and it lead to a FICM which did not change a thing (and I figured that would be the case. They do. com was founded in 2006 and created a site which houses some of the best known Duramax tech you can find. That one says refer to manual Thanks for any help you guys can give me . Jump to Latest getting the same u1800 code, any suggestions? Thanks in advance . Went into limp mode also. code p0201, p0204, p0206, p0207??? Jump to Latest 33K views 7 i know the codes say injector circuit open, but what does that mean? also code p1261 come up it is manufacturer LB7 codes P1093 & P0087. 5 LB7 Duramax Powertrain Lb7 died. mp06011999 297 Replies. If your truck cranks, but does not start, and continues to throws the DTC U1800, the fault could be in The fault code U1800 makes sense nowThe code means unable to communicate with the ficm which a majority of the time is caused from a short!! (LB7) Duramax Second Generation: 2004. Jojo needs a new ecm to regulate the few fpr. U1800 Code after power washing. Straight pipe. The most notorious LB7 Duramax problem is their original injectors. Jump to Latest 19K views 5 Have you checked for other codes since it won't start? You should check the fuses also. The engine started after pumping the primer on the fuel filter housing. SC-D-MAX Discussion starter. VIN Digit: 1. 8350 posts Last code is “U1800”, out of attachment room. 18 posts 01-04. 5 LB7 Duramax Powertrain 2003 Sierra 2500hd runs but only when primer is pumped This P1093 code on Duramax indicates that the engine is having a huge crisis in the motor compartment and is low on fuel. Please help, thank you. Has anybody had this problem or 01-04. When started truck will try to take off in first, and even just idling away it'll bang out of first gear, then slam into 3rd (hydraulic default I assume) General Discussions 01-04. Pulled the codes off the truck below is the list. All stock The truck runs fine most of the day, then without warning the trans will start shifting at odd RPM's, power drops a bit and the check engine light may or may not illuminate. any help? I think it has something to do with my FICM from my preliminary searches and everything. Jump to Latest to see a fuel leak than it is to see a vacuum leak anyways get a scanner and look at rail pressure if you can and any codes that shod narrow it down hope you figure it out Rescanned again and kept constantly getting u1800 and 2149. Search Fixya. 669 posts · Joined 2011 6. AirLift LoadLifter 7500 XL Duramax P0380 Code. With some aftermarket solutions, you can fix most of the 6. Each revision of the Duramax is assigned a new 3-digit RPO code, which is GM’s internal designation for a particular option. Jump to Latest 809 views 0 replies U1800. There is another code in the TCM that you need to pull that will actually tell you what the malfunction is so let me know what that code is and I will help you out. Cruising home one day in my 01 lb7 that I put new s+s injectors and fpr in back in september. 03 Crew Cab Long Bed LB7 Duramax: merchant 04 LB7 with EFI live, straight pipe, intake horn, and air intake. I just put on efi live and an edge monitor yesterday . Pinned the 5 pos switch into ecu. Ron Nielson 220 Replies. 6 diesel chevy duramax. Tried clearing code several times, comes back right away. 5-2005 (LLY) 6. jump to latest 2. 5 LB7 Duramax Powertrain U1000 code? Jump to Latest Does anyone know what this code is? I cleared the code but it came back. ChevyTech77 169 Replies. Jump to Latest 3K views After scaing the truck the following codes were there: p0700,U1800, U2104, U2105, U2106. He says that he did check continuity on all the CAN circuits and found nothing there. injectors? ironmike. 5K Also has two other codes a p1550c and a u1800 if I unplug ficm for decent amount of time when I through it back together codes are gone need some help this truck has been down for about a month and a half now . 1. Pulled codes and got U1800 and can't remember but I think P1226 also. 1ST Generation Duramax [LB7] Electrical U1800 code. Causes: Symptoms: Defective glow plugs: Excessive noise during I haven't had any codes at all. It shows this code stored. Save Share Checked codes again and only U1800 showed up. 5-2005 (LLY) 6 2001-2002 GMC Sierra Pickup Models with 6. more than twice. 5 LB7 Duramax Powertrain Lb7 p1093 & u1800. I bought it about 5. H. pkyep nfroaif kuujtl hghek btofxdc xgl higfkf pclor rdgbi aeptn