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go-west.., Technician
Category: Medium and Heavy Trucks
Satisfied Customers: 1196
Experience:  Technican with 20 years experience focused on engines and electrical.
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Having a fault code 311 on a '99 Cummins N14 CelectPlus. It

Customer Question

Having a fault code 311 on a '99 Cummins N14 CelectPlus.
It was initially a fault code 431 but I found one of the two connectors loose from the accelerator pedal. Plugged it in and now the fault code 311.
Truck still runs fine but is de-rated.
Submitted: 1 year ago.
Category: Medium and Heavy Trucks
Expert:  go-west.. replied 1 year ago.
Good evening
The 311code is for #1 injector
This will definitely give a derate
Let me know if you have any other questions
The 311. Usually is the injector itself.
Customer: replied 1 year ago.
The stop engine light went off today but the engine is still de-rated as it has been.
I would think if it was an injector problem there would be signs such as missing and black smoke. Not the case and still runs like a champ.
I'm leaning towards the accelerator pedal sensor being bad.
Expert:  go-west.. replied 1 year ago.


but that 311 will probably stay active

let me know if you have anymore questions

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