DTC 515

UnclassifiedFuel

What This Code Means

MIL on until code is cleared by technician; Adaptive disabled for the remainder of the key-on cycle; Power Derate (level 2) enforced; Maximum throttle position limited to 20%; ECM resets itself

Possible Causes

  • •Faulty ECM
  • •Faulty ECM power and ground circuits
  • •Flash checksum invalid
  • •Internal microprocessor error

Suggested Actions

  1. 1Check all ECM power and ground circuits
  2. 2Clear DTC information from the ECM using DST and operate vehicle to verify normal performance with no stored codes
  3. 3Connect Diagnostic Scan Tool (DST) in System Data Mode and clear system fault codes
  4. 4Erase fault code after diagnosis by removing battery power
  5. 5Manually clear code
  6. 6Perform On-Board (OBD) System Check
  7. 7Repair power and ground circuits as necessary
  8. 8Replace ECM

ASK RUDY ABOUT THIS FAULT

Get a diagnosis walkthrough for DTC 515 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.