Fault Codes/Power Solutions, Inc./651Power Solutions, Inc.651UnclassifiedGeneralWhat This Code MeansMIL on during active faultPossible Causes•Engine RPM greater than 3800 for 2 seconds continuouslyRelated Power Solutions, Inc. Fault Codes653DTC 112638DTC 122637DTC 244636DTC 512635DTC 513556DTC 514Browse all Power Solutions, Inc. fault codes→ASK RUDY ABOUT THIS FAULTGet a diagnosis walkthrough for 651 on your specific Power Solutions, Inc. unit — cited to the OEM manual, not a forum guess.Your question about 651GET THE ANSWERFree account required — we'll bring your question with you.