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