OBD Guide
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B257D

B Pillar Power Sliding Door Lockout Switch Circuit Low

B257D is an OBD-II diagnostic trouble code meaning: B Pillar Power Sliding Door Lockout Switch Circuit Low. Common causes: door lock switch malfunction, open or short circuit in wiring harness. Estimated repair cost: $56–167.

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

Symptoms

  • Incorrect operation of the sliding door
  • Door lock does not work
  • The malfunction indicator on the instrument panel lights up

Causes

  • Door lock switch malfunction
  • Open or short circuit in wiring harness
  • Poor contact in connectors
  • Power or grounding problems

How to Fix

  1. Check the condition of the door lock switch
  2. Inspect the wiring harness for damage
  3. Check contacts in connectors
  4. Check voltage and grounding in the circuit
  5. If necessary, replace the switch or repair the wiring harness

Related codes

B257EB257FB2580

FAQ

What does the B257D code mean?

B257D is an OBD-II diagnostic trouble code that indicates: B Pillar Power Sliding Door Lockout Switch Circuit Low

What causes a B257D error code?

The most common causes of B257D include: Door lock switch malfunction; Open or short circuit in wiring harness; Poor contact in connectors; Power or grounding problems.

How do I fix a B257D diagnostic trouble code?

To fix B257D: Check the condition of the door lock switch. Inspect the wiring harness for damage. Check contacts in connectors. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B257D?

Limited driving only, diagnose soon

How much does it cost to fix B257D?

The estimated repair cost for B257D is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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