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Daniel Wilson
Daniel Wilson,
Category: Medium and Heavy Trucks
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Experience:  Owner at DJ Wilson
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I have a Cummings ISX and I have the following codes SPN

Customer Question

I have a Cummings ISX and I have the following codes SPN 3363 FMI 5 & SPN 1569 FMI 31
JA: We'll do all we can to help. Tell me a bit more about what's going on so the Heavy Equipment Mechanic can help you best.
Customer: The truck is running those engine codes just popped up
JA: Is there anything else important you think the Heavy Equipment Mechanic should know?
Customer: I just had a pm done
JA: Our top Heavy Equipment Mechanic is ready to take your case. Just pay the $5 fully refundable deposit and I'll fill the Heavy Equipment Mechanic in on everything we've discussed. You can go back and forth with the Heavy Equipment Mechanic until you're 100% satisfied. We guarantee it.
Submitted: 1 year ago.
Category: Medium and Heavy Trucks
Expert:  Daniel Wilson replied 1 year ago.

Hi my name is***** will be glad to help. Bare with me while I pull up your codes.

Expert:  Daniel Wilson replied 1 year ago.

CODE REASON EFFECT

Fault Code: 1684
PID: P205B
SPN: 3363
FMI: 4
LAMP: Amber
SRT:

Aftertreatment Diesel Exhaust Fluid Tank Heater - Voltage Below Normal or Shorted to Low Source. Low signal voltage detected at the aftertreatment diesel exhaust fluid tank heater relay sensor circuit.

The aftertreatment diesel exhaust fluid tank heater will be disabled.

Expert:  Daniel Wilson replied 1 year ago.

This one is informational only that the engine has been derated for power

CODE REASON EFFECT

Fault Code: 3714
PID: S115
SPN: 1569
FMI: 31
LAMP: Amber
SRT:

Engine Protection Torque Derate - Condition Exists. Critical fault codes related to engine operation are active.

Immediate engine power derate.

Expert:  Daniel Wilson replied 1 year ago.

3363 possible causes:

Possible causes of this fault code include:

  • A shorted aftertreatment diesel exhaust fluid tank heater relay
  • Aftertreatment diesel exhaust fluid tank heater signal wire shorted to ground.

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