OBD Guide
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B251C

Right Rear Window Incorrect Direction

B251C is an OBD-II diagnostic trouble code meaning: Right Rear Window Incorrect Direction. Common causes: mixed up wires in the harness, faulty power window control module. Estimated repair cost: $33–111.

Severity
⚠️ Medium
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$33–111 (est.)

Symptoms

  • The right rear window moves in the opposite direction
  • The window does not respond to commands from the switch
  • Intermittent operation of the window regulator

Causes

  • Mixed up wires in the harness
  • Faulty power window control module
  • Mechanical obstruction in the lifting mechanism
  • Door switch problems

How to Fix

  1. Check the integrity of the wiring harness
  2. Test the power window control module
  3. Clean and lubricate the window lift mechanism
  4. Replace the door switch if necessary

Related codes

B251DB251BB251A

FAQ

What does the B251C code mean?

B251C is an OBD-II diagnostic trouble code that indicates: Right Rear Window Incorrect Direction

What causes a B251C error code?

The most common causes of B251C include: Mixed up wires in the harness; Faulty power window control module; Mechanical obstruction in the lifting mechanism; Door switch problems.

How do I fix a B251C diagnostic trouble code?

To fix B251C: Check the integrity of the wiring harness. Test the power window control module. Clean and lubricate the window lift mechanism. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B251C?

Do not drive — repair immediately

How much does it cost to fix B251C?

The estimated repair cost for B251C is $33–111. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat