Fault Codes/Multiquip/EXHAUST SYSTEM ERRORMultiquipEXHAUST SYSTEM ERRORUnclassifiedFuelWhat This Code MeansDEF level gauge in red area; Low Fuel warning indicatorPossible Causes•Low DEF level (10%)•Low diesel fuel availableRelated Multiquip Fault CodesF7P2468DEF FAULT CODESSCR PURGECHECK ENGINESP 10029 FMI 0BACK-PRESSURE FAULTF - 4050F I 1100EXHAUST SYSTEM ERRF I 4010EXH SYSTEM ERROR PABrowse all Multiquip fault codes→ASK RUDY ABOUT THIS FAULTGet a diagnosis walkthrough for EXHAUST SYSTEM ERROR on your specific Multiquip unit — cited to the OEM manual, not a forum guess.Your question about EXHAUST SYSTEM ERRORGET THE ANSWERFree account required — we'll bring your question with you.