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AutoCodes - Generic - B1422

B1422 Code - Compressor Lock Sensor Circuit

- Code Popularity: 19,280 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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What are the Possible Causes of the DTC B1422?

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 Cooler Compressor Assembly (A/C Lock Sensor)
  • Compressor Assembly harness is open or shorted
  • Compressor Assembly circuit poor electrical connection
  • Faulty Air Conditioning Amplifier
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How to Fix the DTC B1422?

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 B1422 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.

What are Code Possible Symptoms?

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

Code B1422 Description

The Engine Control Module (ECM) sends the engine speed signal to the Air Conditioning Amplifier assembly via CAN communication.
The Air Conditioning Amplifier assembly reads the difference between compressor speed and engine speed. When the difference becomes too large, the air conditioning amplifier assembly determines that the compressor is locked, and turns the magnet clutch off.
The Diagnostic Trouble Code (DTC) will be set when an open or short in the A/C lock sensor circuit is detected.

OBDII Code B1422 - Compressor Lock Sensor Circuit - AutoCodes.com
B1422 Code - Compressor Lock Sensor Circuit

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Code B1422 comments

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