Fault Codes/Power Solutions, Inc./556Power Solutions, Inc.556UnclassifiedGeneralWhat This Code MeansDTC 555 resets with the engine idling; Intermittent problemPossible Causes•Faulty ECM power and ground circuits•Faulty ECMSuggested Actions1Perform the On-Board (OBD) System Check2Connect Diagnostic Scan Tool (DST) in System Data Mode and clear system fault code3Check all ECM power and ground circuits per engine electrical section4Repair power and ground circuits as necessary5Replace ECM6Clear DTC information from ECM, restart engine, operate to full operating temperature, and recheck for stored codesRelated Power Solutions, Inc. Fault Codes635636555637516638511651262653224DTC 112Browse all Power Solutions, Inc. fault codes→ASK RUDY ABOUT THIS FAULTGet a diagnosis walkthrough for 556 on your specific Power Solutions, Inc. unit — cited to the OEM manual, not a forum guess.Your question about 556GET THE ANSWERFree account required — we'll bring your question with you.