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Home >> Mazda >> 2017 >> CX-5 Grand Select, FWD >> Repair and Diagnosis >> Steering >> Electronic Steering >> On-Board Diagnostic - Steering >> DTC U0401-00; Can System Communication Error >> Notes

DTC U0401-00; Can System Communication Error: Notes

DETECTION CONDITION & POSSIBLE CAUSE

DTC U0401:00 CAN system communication error
Detection condition
  • Error detected in signal from PCM via CAN communication
Fail-safe function
  • Vehicle speed signal malfunction
    • Control is maintained by gradually changing the controlled vehicle speed and setting it to 100 km/h {62.1 mph}
    • Power steering malfunction indicator light: Illuminated
  • Engine speed signal malfunction
    • Control enabled
    • Power steering malfunction indicator light: Not illuminated
Possible cause
  • PCM malfunction
System wiring diagram -