OBD Guide
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B251A

Right Rear Window Position Sensor 2 Circuit Performance

B251A is an OBD-II diagnostic trouble code meaning: Right Rear Window Position Sensor 2 Circuit Performance. Common causes: open or short circuit in wiring harness, position sensor malfunction. Estimated repair cost: $33–89.

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

Symptoms

  • Inoperability of the right rear power window
  • Intermittent operation of the window regulator
  • Error indication on the instrument panel

Causes

  • Open or short circuit in wiring harness
  • Position sensor malfunction
  • Problems with the control unit
  • Contact corrosion

How to Fix

  1. Check the integrity of the wiring harness
  2. Check the resistance of the position sensor
  3. Clean contacts from corrosion
  4. Replace position sensor if necessary
  5. Check the operation of the control unit

Related codes

B251BB2519B2518

FAQ

What does the B251A code mean?

B251A is an OBD-II diagnostic trouble code that indicates: Right Rear Window Position Sensor 2 Circuit Performance

What causes a B251A error code?

The most common causes of B251A include: Open or short circuit in wiring harness; Position sensor malfunction; Problems with the control unit; Contact corrosion.

How do I fix a B251A diagnostic trouble code?

To fix B251A: Check the integrity of the wiring harness. Check the resistance of the position sensor. Clean contacts from corrosion. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B251A?

Limited driving only, diagnose soon

How much does it cost to fix B251A?

The estimated repair cost for B251A is $33–89. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat