B0423 04 - GMC Diagnostic Trouble Code (DTC) Definition, Causes ...

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Home GMCB0423 04 GMC GMC DTC B0423 04 Make: GMC Code: B0423 04 Definition: Right Rear Wheel Speed Sensor Circuit Description: Ignition ON. Ignition voltage is greater than 9 volts. Vehicle speed is greater than 10 km/h (6 mph) is required to detect rolling wheel speed failures. Cause:
  • An erratic signal output of the wheel speed sensor is detected.
  • A short to voltage, short to ground or an open/high resistance is detected on a wheel speed sensor circuit.
  • A missing wheel speed sensor signal
Failure Type: System Internal FailureThis sub type is used for control module Internal Failures that cannot be assigned to a specific sub type.

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