OBD Guide
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B2631

Sunload Sensor Malfunction

B2631 is an OBD-II diagnostic trouble code meaning: Sunload Sensor Malfunction. Common causes: solar load sensor fault, open or short circuit in wiring harness. Estimated repair cost: $33–89.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$33–89 (est.)

Symptoms

  • Incorrect operation of the climate control system
  • Inadequate temperature in the cabin
  • The Check Engine Light comes on (on some models)

Causes

  • Solar load sensor fault
  • Open or short circuit in wiring harness
  • Poor contact in the sensor connector
  • Malfunction of the climate control unit

How to Fix

  1. Check the integrity of the sensor and its location
  2. Check the wiring harness and sensor contacts
  3. Replace solar load sensor if necessary
  4. Check the climate control unit (if other causes are excluded)

Related codes

B2632B2630B2629

FAQ

What does the B2631 code mean?

B2631 is an OBD-II diagnostic trouble code that indicates: Sunload Sensor Malfunction

What causes a B2631 error code?

The most common causes of B2631 include: Solar load sensor fault; Open or short circuit in wiring harness; Poor contact in the sensor connector; Malfunction of the climate control unit.

How do I fix a B2631 diagnostic trouble code?

To fix B2631: Check the integrity of the sensor and its location. Check the wiring harness and sensor contacts. Replace solar load sensor if necessary. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B2631?

Yes, but get it checked soon

How much does it cost to fix B2631?

The estimated repair cost for B2631 is $33–89. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat