Fault Codes/Caterpillar Inc./50/51Caterpillar Inc.50/51UnclassifiedGeneralWhat This Code MeansGenerator over currentRelated Caterpillar Inc. Fault Codes81 O/U1052-040461063-04032RV1064-57132/32RV1078-011321078-5351152-5351371-040Browse all Caterpillar Inc. fault codes→ASK RUDY ABOUT THIS FAULTGet a diagnosis walkthrough for 50/51 on your specific Caterpillar Inc. unit — cited to the OEM manual, not a forum guess.Your question about 50/51GET THE ANSWERFree account required — we'll bring your question with you.