GM OBD Trouble Code 67

A/C Pressure sensor circuit error

The ECM monitors the A/C system pressure sensor circuit. If the system pressure is to low or too high the ECM will not allow the A/C compressor to operate. 

Fault Code Description

  • 67 - A/C Pressure sensor circuit error


  • Poor A/C performance

Common Problems

  • Open or shorted wiring to A/C pressure sensor
  • Faulty A/C pressure sensor

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