Fault Codes/Caterpillar Inc./50/51Caterpillar Inc.50/51UnclassifiedGeneralWhat This Code MeansGenerator over currentRelated Caterpillar Inc. Fault Codes81 O/U4632RV32/32RV3227/59Browse 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.TRY IT FREE