P0645 - Air Conditioning Clutch Relay Circuit Malfunction

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3   
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Possible causes

  • Faulty Air Conditioning Clutch Relay
  • Air Conditioning Clutch Relay harness is open or shorted
  • Air Conditioning Clutch Relay circuit poor electrical connection

When is the code detected?

The P0645 code is stored if an open or short exists in A/C clutch relay control circuit.

Possible symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)

P0645 Description

A/C clutch relay may also be referred to as A/C compressor clutch relay. A/C clutch relay circuit is monitored when ignition is on and battery voltage is greater than 10.4 volts.
OBDII Code P0645 - Air Conditioning Clutch Relay Circuit Malfunction - AutoCodes.com

P0645 Information for specific makes

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P0645 Comments

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