OBD Codes


Description of the defect/span>

Supercharger Overboost Condition
The PCM disables (bypasses) the supercharger boost and sets a diagnostic trouble code (DTC) to keep from damaging the powertrain (engine or transmission) during potential harmful operating conditions.

Possible causes

List of elements that might trigger the appearance of this code

  • Brake torque (brake on and throttle at wide open). Transmission oil temperature (TOT) exceeds calibrated threshold
  • Engine over temperature
  • Ignition misfire exceeds calibrated threshold
  • Knock sensor (KS) failure or knock detected
  • Low speed fuel pump relay not switching

Diagnostic help

Some tricks to help us for the diagnosis of the failure

Check for other diagnostic trouble codes accompanying the P0234 or check appropriate and available PIDs related to above possible causes.

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