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Fault Code 1141 - APF62 - 10-29-2024
Hello Rawze,
I have a MIL on my truck (2023 Peterbilt Cummins ISX) The fault code is 1141 (Injector Solenoid Driver Cylinder 2 - Mechanical System Not responding or out of adjustment). I read previous threads on this fault code, however other threads don't have the same symptoms. Truck drives fine, power delivery is normal, no misfire, fuel economy is normal. When I go to start the truck after it being off for 5 minutes or so, I have to crank it for more than 10 seconds or what i do is when it doesn't turn over after 3 cranks, I go back to the off position and then crank it back over after and it starts up within 2-3 cranks. There are no fuel leaks that i could see from the outside. I had the code reset when I was in MN and drove down to Sparks, NV where the light came back on, I had the code scanned and it was the same code. Any help/data/procedures would greatly be appreciated.
Thanks,
Aris
RE: Fault Code 1141 - Rawze - 10-29-2024
- Start by replacing the exhaust gas pressure sensor. Be sure to use OEM only for it, as those dorman brand and other knock-offs are notorious for giving false mis-fire detections.
- Also do an injector leak-down test on the fuel rail. It should be done just like this video shows at 29,000 psi and not just at idle psi.
ref: http://rawze.com/forums/showthread.php?tid=8728&pid=75483#pid75483
- If it leaks down more than 4,000 psi in 60 seconds, then solve whatever is causing that issue first.
After that, if it is still reporting injector #2, then its likely is going bad.
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- If the truck is de-mandated (has delete programming) then you also need to have that checked out/reviewed too... to ensure it is not causing progressive engine damage over time. More than 90%+ of all delete programming is absolutely harmful and can cause premature injector failures, turbo issues, ghost problems, and even head gasket issues, or worse.