OBD Guide
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B2549

Driver Door ECU Communication Stop

B2549 is an OBD-II diagnostic trouble code meaning: Driver Door ECU Communication Stop. Common causes: broken or damaged wiring harness, malfunction of the driver's door control unit. Estimated repair cost: $56–167.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • Driver's door power windows do not work
  • Central locking doesn't work
  • The malfunction indicator on the dashboard is on

Causes

  • Broken or damaged wiring harness
  • Malfunction of the driver's door control unit
  • Power or grounding problems
  • Contact corrosion

How to Fix

  1. Check the integrity of the wiring harness between the ECU and Door ECU
  2. Check the power and grounding of the door control unit
  3. Diagnose the door control unit for faults
  4. Replace the door control unit if necessary

Related codes

B2550B2548

FAQ

What does the B2549 code mean?

B2549 is an OBD-II diagnostic trouble code that indicates: Driver Door ECU Communication Stop

What causes a B2549 error code?

The most common causes of B2549 include: Broken or damaged wiring harness; Malfunction of the driver's door control unit; Power or grounding problems; Contact corrosion.

How do I fix a B2549 diagnostic trouble code?

To fix B2549: Check the integrity of the wiring harness between the ECU and Door ECU. Check the power and grounding of the door control unit. Diagnose the door control unit for faults. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B2549?

Limited driving only, diagnose soon

How much does it cost to fix B2549?

The estimated repair cost for B2549 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat