Fault Codes/MQ Power/EMQ PowerEUnclassifiedGeneralWhat This Code MeansDisplay shows 'E' followed by an error code and type of failure; Abnormal parameter displayedPossible Causes•Engine malfunction•Parameter abnormalitySuggested Actions1Press and hold the Reset Button for one second to clear the displayRelated MQ Power Fault CodesHIGH WATER LEVELHIGH WATER TEMP.81U UNDFREQ TRIPLOW COOLANT LEVEL81O OVRFREQ TRIPLOW OIL PRESS.59 OVRVOLT TRIPOVER SPEED27 UNDVOLT TRIPBrowse all MQ Power fault codes→ASK RUDY ABOUT THIS FAULTGet a diagnosis walkthrough for E on your specific MQ Power unit — cited to the OEM manual, not a forum guess.TRY IT FREE