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AutoCodes - Generic - B1D21

B1D21 Code - Remote Control Switch Signal Compare Failure

- Code Popularity: 10,586 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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What are the Possible Causes of the DTC B1D21?

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 Remote Control Switch
  • Remote Control Switch harness is open or shorted
  • Remote Control Switch circuit poor electrical connection
  • Faulty Body Control Module (BCM)
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How to Fix the DTC B1D21?

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 B1D21 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 B1D21 Description

The Body Control Module (BCM) monitors the Remote Control Switch. The BCM sets the OBDII code when the Remote Control Switch is not to factory specifications.

OBDII Code B1D21 - Remote Control Switch Signal Compare Failure - AutoCodes.com
B1D21 Code - Remote Control Switch Signal Compare Failure

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Information for Specific Makes

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Code B1D21 comments

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