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Home >> Mazda >> 2021 >> CX-5 Signature >> Repair and Diagnosis >> Brakes >> Traction Control >> On-Board Diagnostic - Dynamic Stability Control System >> DTC U0402-00: ABNORMAL MESSAGE FROM TRANSMISSION/TRANSAXLE [DSC HU/Control Module] >> Notes

DTC U0402-00: ABNORMAL MESSAGE FROM TRANSMISSION/TRANSAXLE [DSC HU/Control Module]: Notes

DTC U0402:00 Abnormal message from transmission/transaxle
DETECTION CONDITION
  • The DSC HU/Control Module received error signals from the transmission/transaxle for 1 s or more with the ignition switched ON (engine off or on).
FAIL-SAFE FUNCTION Refer to "DTC Table" and "Fail-safe Function Malfunction Contents". (See DTC TABLE [DSC HU/Control Module] .)
POSSIBLE CAUSE
  • The transmission/transaxle could not send a normal signal temporarily. (DTCs are stored in the TCM.)
  • Transmission/transaxle malfunction
  • TCM malfunction
SYSTEM WIRING DIAGRAM Not applicable