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GM OBD Trouble Code 69

By Jim Taddei, May 1, 2009

A/C Clutch Relay circuit error (open circuit indicated)

A/C High Pressure switch error

  • Depending on the model, code 69 can refer to two different systems.
  • Please choose from one of the above links for specific information on each system.

A/C Clutch Relay circuit error (open circuit indicated)

The ECM monitors the A/C compressor relay control circuit. If the control circuit is open the ECM will set code 69 and the A/C compressor operation will be disabled.

Fault Code Description

  • 69 - A/C clutch relay circuit error (open circuit indicated)

Symptoms

  • Poor A/C performance

Common Problems

  • Open wiring to A/C compressor relay
  • Faulty A/C compressor relay

A/C High Pressure switch error

The ECM monitors the A/C system pressure. If the system pressure becomes to high code 69 will set and the A/C compressor operation will be disabled.

Fault Code Description

  • 69 - A/C High Pressure switch error

Symptoms

  • Poor A/C performance

Common Problems

  • Faulty A/C Pressure switch

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