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AutoCodes - Generic - B2321

B2321 Code - Driver Side Door ECU Communication Stop

- Code Popularity: 15,259 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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What are the Possible Causes of the DTC B2321?

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 Front Power Window Regulator Motor Assembly Left (LH)
  • Front Power Window Regulator Motor Assembly Left harness is open or shorted
  • Front Power Window Regulator Motor Assembly Left circuit poor electrical connection
  • Faulty Main Body ECU (Multiplex Network Body ECU)
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How to Fix the DTC B2321?

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.

Code Tech Notes





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What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B2321 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 B2321 Description

This Diagnostic Trouble Code (DTC) is stored when LIN communication between the Front Power Window Regulator Motor Assembly Left (LH) and Main Body ECU (Multiplex Network Body ECU) stops for 10 seconds or more.

OBDII Code B2321 - Driver Side Door ECU Communication Stop - AutoCodes.com
B2321 Code - Driver Side Door ECU Communication Stop

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Code B2321 comments

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