123

UnclassifiedFuel

What This Code Means

MIL flashes at 2 Hz (twice per second); Power Derate (level 1); Maximum throttle position restricted to 50%; Adaptive disabled

Possible Causes

  • •Engine Coolant Temperature reading or estimate greater than 225 deg. F with engine RPM greater than 1200
  • •Engine over temperature

ASK RUDY ABOUT THIS FAULT

Get a diagnosis walkthrough for 123 on your specific Power Solutions, Inc. unit — cited to the OEM manual, not a forum guess.

GET THE ANSWER

Free account required — we'll bring your question with you.