Medium and Heavy Trucks
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Do you have the engine serial number or FULL VIN? I will need the fault codes present to assist.
They should be on the dash. SPN or PID and FMI numbers
You cannot see numbers in the dash screen ? Does your unit have the DIAG switch or knob to inform you of the fault/? What is you dash saying why it is in derate? what is the message?
Yes there is something not correct with the unit. When the DIAG is active it should show coeds. You should have either a TOW or field service tech come out and see if hey can hook up the the units computers and see what is going on.
Ok you need to seek a Cummins or a dealer for repair here is the fault info
Fault Code: 2274PID: P411SPN: 411FMI: 4/4LAMP: AmberSRT:
Exhaust Gas Recirculation Valve Delta Pressure Sensor Circuit - Voltage Below Normal or Shorted to Low Source. Low signal voltage detected at the EGR differential pressure sensor circuit.
EGR valve actuation will be disabled
Possible causes of this fault code include:
That is the most common failure and check to make sure the ports are not plugged with carbon when removed. If you find that the ports show carbon deposits remove the intake and clean the whole intake
Excessive idling causes the carbon to accumulate in the system and cause issues. I hope this helped Please don't forget to rate my service
No problem. Let me know if you need anything else , I'm always here to help. I'll follow up on a few days if i don't hear from you . Thanks for allowing Just Answer assist.
Hi just following up,
Hi, Just following up Please don't forget to rate my service