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P0645 Mazda Code - Air Conditioning Clutch Relay Circuit Malfunction

- Code Popularity: 4,362 Views
- Repair Importance Level: 1/3
- Repair Difficulty Level: 3/3
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What are the Possible Causes of the DTC P0645 Mazda?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Faulty Air Conditioning Clutch Relay
  • Air Conditioning Clutch Relay harness is open or shorted
  • Air Conditioning Clutch Relay circuit poor electrical connection
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How to Fix the DTC P0645 Mazda?

Review the 'Possible Causes' mentioned above and visually examine the corresponding wiring harness and connectors. Ensure to check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.

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What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0645 Mazda code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.

When is the Code Detected?

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

What are Code Possible Symptoms?

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

Code P0645 Mazda 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 Mazda - Air Conditioning Clutch Relay Circuit Malfunction - AutoCodes.com
P0645 Mazda Code - Air Conditioning Clutch Relay Circuit Malfunction

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Code P0645 Mazda comments

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