Engine-Codes - Generic - B2120

B2120 Code - Door Passenger Set Switch Stuck Failure

- Code Popularity: 9,286 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
Table of contents
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What are the Possible Causes of the DTC B2120?

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 Door Passenger Set Switch
  • Door Passenger Set Switch harness is open or shorted
  • Door Passenger Set Switch circuit poor electrical connection
  • Faulty Body Control Module (BCM)
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How to Fix the DTC B2120?

Check the 'Possible Causes' listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

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What is the Cost to Diagnose the Code?

Labor: 1.0

The cost to diagnose the B2120 code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 and $150 per hour.

What are Code Possible Symptoms?

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

What Does the B2120 Code Mean?

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

B2120 Code - Door Passenger Set Switch Stuck Failure

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Code B2120 Information for Specific Makes

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