OBD Guide
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B2251

Back Door Closer Switch Malfunction

B2251 is an OBD-II diagnostic trouble code meaning: Back Door Closer Switch Malfunction. Common causes: broken wires in the switch circuit, rear door closer switch malfunction. Estimated repair cost: $33–89.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$33–89 (est.)

Symptoms

  • Incorrect operation of the rear door closer
  • The rear door does not lock in the closed position
  • The malfunction indicator on the instrument panel lights up

Causes

  • Broken wires in the switch circuit
  • Rear door closer switch malfunction
  • Contact corrosion
  • Problems in the wiring harness
  • Mechanical damage to the switch

How to Fix

  1. Check the integrity of the wires in the switch circuit
  2. Inspect contacts for corrosion
  3. Check the operation of the rear door closer switch
  4. Replace the faulty switch if necessary
  5. Check the wiring harness for damage

Related codes

B2250B2252B2253

FAQ

What does the B2251 code mean?

B2251 is an OBD-II diagnostic trouble code that indicates: Back Door Closer Switch Malfunction

What causes a B2251 error code?

The most common causes of B2251 include: Broken wires in the switch circuit; Rear door closer switch malfunction; Contact corrosion; Problems in the wiring harness.

How do I fix a B2251 diagnostic trouble code?

To fix B2251: Check the integrity of the wires in the switch circuit. Inspect contacts for corrosion. Check the operation of the rear door closer switch. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B2251?

Limited driving only, diagnose soon

How much does it cost to fix B2251?

The estimated repair cost for B2251 is $33–89. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat