Fault Codes/Multiquip/7940Multiquip7940UnclassifiedGeneralWhat This Code MeansTrip GB; Block; Trip + StopPossible Causes•Ground Failure•Ground Open fail•Ground Close Fail•Ground Position Fail•BB Measurement FailureRelated Multiquip Fault Codes812481317875813378748135787382917872ABSENCE OF REAGENT DOSING81-2 OVRFREQ ALARMCANBUS COMM ERRORBrowse all Multiquip fault codes→ASK RUDY ABOUT THIS FAULTGet a diagnosis walkthrough for 7940 on your specific Multiquip unit — cited to the OEM manual, not a forum guess.Your question about 7940GET THE ANSWERFree account required — we'll bring your question with you.