asked Dec 26, 2017 by anonymous. pickup will just die as your driving or plane ol wont start. also giving codes P0090, P0405, P0612, P0700. Vehicle: 2004, DURAMAX 3500. u1800. duramax.Please help! possible FICM failure. I have a 2003 duramax with the 6.6l LB7. I stopped at the stop sign and the truck just died and now it wont start. Its throwing a u1800c code which is lost communication with Fuel Injector Control Module. I checked all the fuses and relays and dint find anything. i also checked the wires and plugs going to ...If you have a Duramax truck, at some point, you need to decode P0678 to track down the issue and fix it conveniently. DTC P0678 means the Glow Plug circuit in the Cylinder 8 of your Duramax is malfunctioning or has been damaged. A defect in the glow plug or the relay connecting the glow plug can cause the P0678 trouble code.Im getting u1800 u2104 u2106 codes on my 02 chevy duramax its shifts at high rpms ... Customer: Im getting u1800 u2104 u2106 codes on my 02 chevy duramax its shifts at high rpms. Answered by Jerry Newton in 21 hours 5 years ago. Jerry Newton. 20+ years of experience. 8,622 satisfied customers.Water Pump Failure. Fuel Filter Housing O-ring Leaks. Blown Head Gasket. Overheating (fan clutch problems, radiator gunk) In addition to the above common engine problems, there are also a few worthwhile to mention problems that affect high horsepower LB7’s: Crankshafts + connecting rods break at high hp.Some forum posts on other sites state that weak batteries may have something to do with the communication problem between the FICM and the ECM causing the U1800 code. If your truck cranks, but does not start, and continues to throws the DTC U1800, the fault could be in the FICM, or the FICM power and ground circuits.The u1000 seems to show up when you first start the truck. I can clear with the edge and will be gone until turn it off again. No check engine light. Ppei sent me another tune . No more u1000 code! 22 miles per gallon on the last tank. Checked the old fashion way.Dirtymax001. 8 posts · Joined 2012. #6 · Mar 7, 2013. Go to an auto parts store like O Reilly's and they print u off a list of the possible causes and fixes to the code. Sometimes a malfunction in the way your chip is hooked up, it will cause it to throw a false code. tHe bLaCk pAnThAr. 2001 Lb7 Duramax. -Dual Exhaust.p0370 is a generic code, could mean bad injection pump, could mean bad fuel pressure/pulse sensor. U1800 is a loss of communication somewhere in the circuit. The fuel injector harness has a rubbing issue and then the connectors coming loose. Visually check to see if there is any chaffing, rubbing, along the fuel injector harness.My 04 silverado duramax blew the edm fuse. replaced now only running of 4 cylinders. throwing codes p1226, 1229, 1235, 1244. also a u1800. Is the ficm bad? ... 05 chevy 2500hd 4x4 6.6 duramax diesel code p2149 fuel injector group b supply voltage circuit open p0208 injector circuit open #8 I assume that the injector is bad could i get the ...Chevy / GMC Duramax 01-04.5 LB7 Forums. 01-04.5 LB7 Duramax Powertrain 02 lb7 wont start. Jump to ... been runnin great until yesterday, it wouldn't start at all and gave me a code (u1800 failure to communicate with ficm), so I tore it all down disconnected the ficm, checked all the pins and wires for damage or corrosion, took …566 posts · Joined 2013. #3 · Aug 2, 2014. The code indicates exhaust temperature sensor number 4 (located near the outlet of the DPF) has an open circuit or short to voltage condition with one of the two wires that go to the sensor. Most likely a broken wire or a bad connection at one of the connectors. LML's actually have four exhaust temp ...Chevy / GMC Duramax 04.5-05 LLY Forum. 04.5-05 LLY Duramax Powertrain Codes C0035 & U1000. Jump ... I have had these two codes for months. C0035 & U1000. ... U1800 is loss of comm to the FICM) but couldn't find anything that tells exactly what's missing on the CAN buss to set off a U1000. From reading some of @Ron Nielson link, ...Due to several harnesses having been disconnected from the engine, I ignored the U1800 DTC for the moment. That said, the enabling criteria for P2149 indicated that P2149 would not run in the presence of U1800. That was a little confusing, but P2149 proved to be the more problematic of the two codes. DTC P21492006 LLY U1000 code - won't try to start. So here is the story - truck sat all winter and I started it occasionally. It was running perfectly. I took it in for an alignment, then brought it home and put it in the garage. I was intending to wire in a GPS heads up display speedo on the dash.It is possible for a number of different conditions to cause the P0370 code to set, including the following: A short or open in the wiring harness to the timing reference optical sensor. Damage to your car's PCM (powertrain control module) A fault in the timing reference optical sensor. A corroded or poor connection at the timing reference ...2001 chevy 2500hd 6.6 diesel u1800 code truck runs great but the sev eng lite stay on i checked all wires & conect to icm ... I have a 2003 Chevy 2500HD 6.6 L Duramax (LB7) Diesel. I am getting P0404 code and the check engine light comes on.U1800 code when stuttering. I have replaced engine harness, ecm tcm harness, ecm, ficm, tcm, fpr, and a couple other sensors. Checked all the grounds. Here is a video of the truck acting up later after I parked the truck it ran fine. Every search on the u1800 code comes up with the truck crank no start that I found.If DTC P20E8 is a current / active DTC; complete the repair as directed by the DTC P20E8 flow chart. If DTC P20E8 is found to be intermittent and cannot be duplicated; inspect the part number of the Diesel Exhaust Fluid (DEF) pump. If the DEF pump part number is not 84148452; replace the pump. 2022 GMC Duramax. May 7th, Ordered.Bear9350 Discussion starter. 1516 posts · Joined 2009. #1 · Jul 7, 2013. I just finished doing an injector swap and am getting a P0118 code and my service engine light is on. My coolant temp gauge also doesn't work. I'm supposed to be driving about 250 miles today and would like to atleast take a look at this.P2C48 code on 2020 Sierra 2500hd. I have a code that I can't look up on my truck. I have 14k miles on it and yesterday it threw a P2C48 code. The only thing I can figure was that it was very hot yesterday and I remote started my truck and let it idle for a while. It was Sunday so I went to Autozone and had them pull the code.LB7 Code U1800 FCIM wire chafe. I had an issue blowing the 25A FCIM fuse. Manhandling the harness would usually cause the fault to disappear. I've seen threads on wire chafes at the ALT bracket and under the fuse center, as well as contamination in the bail connectors. It took some digging, but mine was in a different spot.2017 Duramax U18A2 fault code. I have a crank no start problem throwing a U18A2 fault. I bought a new fuel pump power control module and was wondering if I needed to program the module for the pickup to start? Was also wondering if some have a schematic to the fuel pump control module so I could check continuity, power and grounds ? Thanks.Some customers of 2002-04 model year Chevrolet Silverado; and GMC Sierra trucks, equipped with a 6.6L diesel V8 (LB7) engine, and California emissions (YF5/NE1), or Clean Fuel Fleet emissions (VCL), may experience a condition where the engine glow plugs may fail. Failure of the glow plugs on these vehicles will cause illumination of the MIL.DTCs U1800 and P2149. 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 communication “U-codes.” I found codes U1800 and P2149.If a CICS Java program is included in the CICS PLT (stage 3), the CICS region will issue the following message and then terminate with a DFHKE1800 (U1800 abend): . DFHSR0606 Abend (code .....) has ben detected. . If this Java program is not included in the CICS PLT at startup, CICS will initialize without any problems. Local fix. Problem summaryThe Duramax p0087 code indicates a fuel rail pressure issue. This code can be caused by several factors, including a clogged fuel filter, a faulty fuel pressure regulator, or a faulty fuel pump. The Duramax p0087 code is one of the most common issues faced by Duramax diesel engine owners. It indicates that there is a problem with the vehicle ...2006 Chevy Silverado 2500HD Crew Cab, 6.6L LBZ, Amsoil Dual Bypass Oil Filter, Banks Ram Air Box, EGR Delete and Intake Heater Delete and finger stick by All Season Diesel Performance, Hypertech Max Energy power programmer...8. 38. 55. Charleston, SC. www.ridgerunnerdieselperformance.com. Dec 5, 2015. #6. Check the two large engine bale connectors on the drivers side for pushed back or bent/loose pins. I had a issue with my 2002 doing that and it was a few loose pins from EDGE boxes and Van Aaken plug an d play boxes over the years.It would be stuck in whatever gear it was in at the time. It might happen in the driveway or 4 hours later in another state. When it threw the codes it sounded like a thunk, clunk in driveline. If you pulled over and shifted from D to R, it sounded like the driveline was going to fall out. It would throw P0700 and U2106.0. Sep 3, 2018. #1. 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. Has anybody had this problem or any suggestions?It wouldn't start. Pulled codes and got U1800 and can't remember but I think P1226 also. If you look these codes up, it is a comm failure between the ECM and the FICM. All the instances of this on various diesel sites people find wires rubbed bare and grounded to the alternator bracket and such.I am getting a U1800 code (Lost comm w/ fuel injector module) P0090 P0193 P0380 P06022 I read of this forum ... 2003 Silverado 3500 Duramax 6.6l with code o87,fuel pressure in rail tool low.What could be my problems?Filter,fuel pump,fuel pressure sensor ,injector module? ...DTCs U1800 and P2149. 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 communication "U-codes." I found codes U1800 and P2149.The truck just randomly died on me at a stop light and would not start back up towed it back to my shop and truck fired right back up. let it run for a bit and everything seemed fine then all of a sudden died. 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. until last night was ...2003 LB7 Duramax GMC. Was running fine, shut it off at my mother in laws (she lives several miles back down an extremely washboarded dirt road) and now it cranks over but will not start. ... Code scanner shows- P0090, U1800 and a bunch of other codes, These are all "P" codes that were stored and will come right back after clearing- 1800,0016 ...Jul 14, 2017. #1. Codes will not clear/erase. Has the computer or FICM failed? Background: code PO 0090 had tripped and Truck would not start until code was cleared. Code PO 0090 would not clear after multiple attempts to clear and U1800 appeared on scanner. I replaced cp3. Code will not clear. A.Jan 2, 2017 · Google (Duramax U0105) or what ever your code is, this will bring up all the diesel site and there fix for this code. ... The code was U1800.2003 Chevy 3500 6.6 L Duramax. Customer put $15 worth of gas. 3/5/2024. On a 2024 Chevy Silverado, 3500 with a 6.6 Duramax engine. 3/5/2024. i have a crank no start with code U1800 LB7 Duramax injector. 3/6/2024. duramax 2007.5 defueling at an idel Duramax , 3/6/2024.Customer: 2001 chevy 2500hd 6.6 diesel u1800 code truck runs great but the sev eng lite stay on i checked all wires & conect to icm. Answered by Virtual Technician in 16 mins 10 years ago. Virtual Technician. 25+ years of experience. 194 satisfied customers.Chevy / GMC Duramax 01-04.5 LB7 Forums. 01-04.5 LB7 Duramax Powertrain Balance rate and P0301 code Dmax Gurus need your advice! ... Yesterday my edge cts monitor came up with a P0301 code which i was told was cylinder 1 misfire. I have egr codes aswell from when i deleted the egr (unrelated but i thought i should mention it if it helps). ...6.5L Diesel Engine Duramax First Generation: 2001-2004 (LB7) Duramax Second Generation: 2004.5-2005 (LLY) 6.2L Diesel Engine Fuel System, Air, Exhaust & Emissions Upgrades Top Contributors this Month View AllSome forum posts on other sites state that weak batteries may have something to do with the communication problem between the FICM and the ECM causing the U1800 code. If your truck cranks, but does not start, and continues to throws the DTC U1800, the fault could be in the FICM, or the FICM power and ground circuits.So, I keep getting this code intermittently "P2383" I only have one vehicle and all the dealerships seem to be booked up for a month or don't have a diesel technician. ... Chevy and GMC Duramax Diesel Forum. 3.8M posts 209.3K members Since 2005 A forum community dedicated to Chevy and GMC Duramax diesel owners and enthusiasts. ...Anyways, I primed it still no start, checked fuses and everything, finally it threw a u1800 code. My buddy hooked up jumper cables and it fired right up. Going to get the batteries tested tomorrow but could a low battery throw a ficm code? Sent from AutoGuide.com Free App. 2002 GMC Sierra 2500HD LB7 Regular cab, 03-07 GMC front end conversion ...On some diesel engines, the PCM will operate the glow plugs for a period of time after the engine is running to reduce white smoke and engine noises. Basically, the P0380 code means that the PCM has detected a fault in the glow plug/heater circuit "A". Note: This DTC is very similar to P0382 which that code refers to circuit "B".Few suggestions: 1) Check that the cam bearing under the turbo didn't spin and block oil flow to the bearings/vane position solenoid. 2) Make sure to do a vane position sensor relearn with a Tech 2 after install. 3) Pressurize the intake (post turbo) to 30 psi to verify you don't have any leaks. 4) Use an EGR blockoff plate to ensure the EGR ...The ECM monitors CAN operational status by expecting a constant flow of messages from the FICM and the TCM. If the ECM fails to receive an expected message from one of the other modules, DTC U1800, U2104, or U2106 will set, depending on what communication is lost. The repair for this code can be a faulty TCM (transmission control module),FICM ...The diagnostic codes that are required by law on all OBD II systems are standardized and all vehicle manufacturers use the same common code list. This means the misfire code P0300 represents the same failure on a GM/GMC Duramax, Ford Powerstroke, or Dodge Cummins. OBD-II Check Engine Light Trouble Codes for the GM/GMC Duramax below:Alright so a few months back I kept getting a P0045 code. P0045 T/S Charger Boost Ctrl Solenoid Circ/Open. This is my first diesel and turbo charged vehicle and was still learning how it all worked. Many of the other threads spoke of such issue but all listed that it was one of the following issues: Vane Positon Sensor.2001 chevy 2500hd 6.6 diesel u1800 code truck runs great but the sev eng lite stay on i checked all wires & conect to icm ... I have a 2003 Chevy 2500HD 6.6 L Duramax (LB7) Diesel. I am getting P0404 code and the check engine light comes on.The U1800 code is set when no comm between ECU and FICM. I have replaced 2 FICMs so far, and repaired dozens with the wires chafed at the alt bracket. I would check the wiring over again just to be sure, not just at the alt area. ... Just bought 04 Chevy Duramax 2500HD 6.6 LB7 120,000 Miles. Stalled while driving. Replaced fuel …P0090 is fuel pressure regulator related, not the rail pressure sensor. You either have a sticky FPR, a bad coil in the FPR or no power to the FPR. you need 5v to the FPR for it to be controlled. Thanks! After re-seating X107 and 108 (for some reason were not fully seated, DOH!) that code went away after resetting the codes, the only codes I ...HI i have a 2001 duramax with problems. codes are p0193 p1261 p1262 p0093 p0204 p0201 p0206 p0207 u1024 u1026 u1041 u1016 u1000 u1800 u1088 I have a banks tuner on the truck and it amplifies the problem. the codes are with or without the tuner. have replaced all the injectors and pressure regulator.The computer uses engine oil pressure to cycle the vanes from 0-100%. This pressure pushes a plunger, which moves the unison ring and, in turn, cycles the vanes through their whole range from closed to open. In a P003A code, the problem lies with the unison ring: it seizes up and can no longer turn its full motion.strokeit355 Discussion starter. 32 posts · Joined 2013. #1 · Apr 8, 2015. Hi guys after a bit of help diagnosing my truck, getting a u1800 code that I can't get to bottom of. The other night the truck started ok and ran for a few seconds but then died and hasn't restarted since. I checked all the basics first and then put a scan tool on it .A forum community dedicated to Chevy and GMC Duramax diesel owners and enthusiasts. Come join the discussion about modifications, towing, classifieds, troubleshooting, maintenance, and more! Show LessTake out the sensor and check for physical damages, cloggings, and debris inside the sensor chip. Step 4: Cleaning the Mass Air Flow Sensor. Remove the sensor from the connecting port and clean it using an authorized Mass Air Flow sensor cleaner. Spray on the sensor chip and wipe using a soft piece of clothes.2006 Chevy Silverado 2500HD Crew Cab, 6.6L LBZ, Amsoil Dual Bypass Oil Filter, Banks Ram Air Box, EGR Delete and Intake Heater Delete and finger stick by All Season Diesel Performance, Hypertech Max Energy power programmer...Nov 24, 2013 · 33 posts · Joined 2011. #3 · Nov 26, 2013. I had that code pop up and P003A. I searched the forums and it looks like the P2563 code is pretty common. From what I found, a lot of people will try cleaning the sensor and wires 1st, then replacing the sensor and/or solenoid, then end up taking it to the stealership and replacing the turbo.The P0380 code is a standard OBD-II trouble code suggesting an issue within the glow plug heater circuit. When the powertrain control module (PCM) detects a variation in the voltage from the “A” area of the glow plug heater circuit that is more than a 10 percent variation from the expected output, the P0380 code will be detected.Tennessee. Mar 4, 2020. #1. My 03 Duramax just died/quit going down the road today just like you switched the key off. Pulled code and it is U1800. Failure to communicate with fuel injector control module. Anyone had this before and what was the fix? checked fuses relays and all wires are good.Chevy / GMC Duramax 07.5-10 LMM Forums. 07.5-10 LMM Duramax Powertrain glow plug code issue ... had a bad glow plug on#4 changed the plug reset code parked the truck outside 6hr later started engine check engine light came back withPO674 plug checks ok I have deleted 5 or 6 times & check engine light keeps coming on with same code would there ...Chevy / GMC Duramax 07.5-10 LMM Forums. 07.5-10 LMM Duramax Powertrain All Glow plugs throwing Codes. Jump to Latest ... If all of the glowplugs went bad you would have 8 different codes. 2021 Corvette Stingray Coupe 2LT, GT2 Seats, Z51 Performance Package W Magnetic Selective Ride Control, ...321 posts · Joined 2011. #3 · Nov 3, 2011. There is nothing that says FICM, only like ENG2 and ENG1 and stuff. any body else know what it might be? 2003 2500HD LT, CCSB, LB7, EFI tuned by IdahoRob and installed by GOS Performance, Edge CS Insight, AFE intake, 5" center dump exhaust, 8" MBRP tip, 6" Pro-Comp lift, Fox dual resevoirs shock ...If you have a Duramax truck, at some point, you need to decode P0678 to track down the issue and fix it conveniently. DTC P0678 means the Glow Plug circuit in the Cylinder 8 of your Duramax is malfunctioning or has been damaged. A defect in the glow plug or the relay connecting the glow plug can cause the P0678 trouble code.188 posts · Joined 2012. #1 · Nov 5, 2013. Hey guys-. So yesterday the Duramax was totally dead. I kept getting code U0105, and the ECU fuse would blow every time I would turn the key. Cranks, no start. I isolated it to the wiring harness, and sure enough there was a spot where a metal bracket had worn through the wiring harness.It's throwing codes on the OBDII snapon scanner. It's throwing a U1800 code for the FICM. We replaced the fuse, KISS method... didn't help.. we traced the wires back to the ECU and now we are going to trouble shoot from there. I understand the U1800 isn't caused by lack of priming.Jan 26, 2017 · Pulled the codes and the codes are; P0700 U2105 U2106 U1800 ... 2003 2500HD LS CC/LB 4x4 Duramax/Allison Completely Stock 273K miles on the original stock injectors.Shorted or Open Connectors and Wiring Harness. In most cases, U1041 codes are generated by a shortened or open connector on the Chevy Silverado wiring harness. When a connector is shorted or open, EBCM …Mar 7, 2017 · LB7 Code U1800 FCIM wire chafe. I had an issue blowing the 25A FCIM fuse. Manhandling the harness would usually cause the fault to disappear. I've seen threads on wire chafes at the ALT bracket and under the fuse center, as well as contamination in the bail connectors. It took some digging, but mine was in a different spot.Engine-Codes - Generic - U1800. U1800 Code - Lost Communications With Fuel Injector Control Module. - Code Popularity: 3,324 Views. - Repair Importance Level: 3/3. - Repair Difficulty Level: 3/3.As long as the light is off its probably not too serious of a problem. Today I installed a new rear speed sensor and no more stored codes. So I'm assuming the 1300 code had something to do with the speed sensor. 02 lb7 Sierra hd, PPE boost valve, SB intake, MBRP exhaust, CAT fuel filter kit, efi live 90hp max effort, cts2 monitor.02 duramax P0107, P0540 and U1800 cleared - Answered by a verified GM Mechanic ... Always the same three codes.P0107, P0540, U1800. We thought that the intake air heater relay may not be working so we replaced them and still have the issues. What do all three codes have in common, and why only when the weather is cold.Looked like all the readings were everywhere, jumping all around. Checked the codes and have a U1800. Not sure if i got the code from doing the compression check or something else is going on. I cleared the code and started the truck again and the U1800 code did not come back but the truck still had the loud knock and black smoke.2006 Silverado 3500 crew cab dually Duramax LBZ. New down pipe and 5 inch exhaust, new up pipe, cold air intake, new garret stage 1 turbo, Airdog 165 lift pump, EGR delete and EFI Live. 2015 Silverado 2500 crew cab single rear wheel LML. DPF deleted, new exhaust, EGR delete, cold air intake, Airdog 165 lift pump and EZ Link programmer.only codes are pcm u1800 and pcm 0090 from reading through other posts of similar issues it sounds like injectors, but no one else was listing any codes. ... Duramaxdiesels.com was founded in 2006 and created a site which houses some of the best known Duramax tech you can find. We strive to keep this the #1 forum for tech and …156 posts · Joined 2011. #2 · May 28, 2013. Sorry. Code is p0090. 06 GMC duramax lbz. 4in rancho lift, 35" dunlop fierce attitudes, 4" downpipe back exhaust, banks air intake, Russell ss braided brake lines, efi and edge insight cts, energy suspension controll arm and sway bar bushings. 2010 Lexus IS 250 bone stock.Please help! possible FICM failure. I have a 2003 duramax with the 6.6l LB7. I stopped at the stop sign and the truck just died and now it wont start. Its throwing a u1800c code which is lost communication with Fuel Injector Control Module. I checked all the fuses and relays and dint find anything. i also checked the wires and plugs going to ...This Duramax was towed in for a cranks no start condition. No Codes related to the issue. Fuel system had lost prime due to a leak on the suction line betwee...There are many situations where you can find yourself needing to look up a ZIP code. Maybe you’re trying to mail a letter but only have the recipient’s street address. Perhaps you’...Help, New Truck and P0700, U2104, U2105, and U2106 Codes. So I just purchased this truck and drove it 1200 miles home. Got about 14 MPGs and about half way home the check engine light came on. When I got home I ran the codes. P0700 is the tranny telling the computer there is a problem and needs the TCM to be read by a tech 2.My '17 threw code P1050 and from what I've read the Emission Reduction Fluid Supply Pump Module - GM (84545446) needs replaced. ... A forum community dedicated to Chevy and GMC Duramax diesel owners and enthusiasts. Come join the discussion about modifications, towing, classifieds, troubleshooting, maintenance, and more!Alright as soon as you posted this message i got the security light to turn off and the code went away and hasn't some back. i cleared the codes all throughout the truck. im still seeing a code U1000 for class 2 data link malfunction and U1800 for lost communication with Fuel Injection control module.Codes are U1800 lost communications with fuel injector - Answered by a verified Chevy Mechanic ... HI i have a 2001 dura, U1800. Jump to Latest Follow ... I recently purchased a 2001 GMC 2500HD DURAMAX diesel 4x4 Allison transmission, The computer uses engine oil pressure to cycle the vanes from 0, Shorted or Open Connectors and Wiring Harness. In most cases, U1041 codes are generated by a shortened o, The u1000 seems to show up when you first start the truck. I can clear with the edge and will be gone until , 2001 chevy 2500hd 6.6 diesel u1800 code truck runs great but the sev eng lite stay on i check, Take out the sensor and check for physical damages, cloggings, and debris inside the sensor chi, How to fix a Chevy or GMC P0700 Code: Malfunction wit, As long as the light is off its probably not too serious of a pro, Thursday night didn’t start again, codes this time p0381 and u1800. C, Upon investigation, the technician may find one or multiple , 2. Points. 0. Jul 14, 2007. #1. I have a 2003 chevrolet 2500 HD 4wd w, P1050 code def level sensor 19. Can't find any for sure in, 2003 Chevy 3500 6.6 L Duramax. Customer put $15 worth of g, HI i have a 2001 duramax with problems. codes are p0193 p1, Below are common check engine light trouble codes for t, Code: U1800. Modules: Description: Lost Communications With Fuel I, The most likely cause for the fault code P1050 in your 201.