Engine-Codes - Generic - B2251

B2251 Code - Back Door Closer Switch Malfunction

- Code Popularity: 4,864 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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What are the Possible Causes of the DTC B2251?

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 Back Door Lock Assembly
  • Back Door Lock Assembly harness is open or shorted
  • Back Door Lock Assembly circuit poor electrical connection
  • Faulty Multiplex Network Door ECU
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How to Fix the DTC B2251?

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 B2251 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 B2251 Code Mean?

The Multiplex Network Door ECU receives signals from the latch switch, sector switch, pawl switch, and back door courtesy switch, which are built into the Back Door Lock Assembly. Based on these switch signals, the latch position of the back door lock assembly is determined. The Diagnostic Trouble Code (DTC) sets when a malfunction is detected in position information from the back door courtesy switch within a specified amount of time, while the back door closer is operating.

B2251 Code - Back Door Closer Switch Malfunction

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Code B2251 Information for Specific Makes

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