OBD Guide
ENFRDEESPT

B24A9

Sunload Sensor Malfunction

B24A9 is an OBD-II diagnostic trouble code meaning: Sunload Sensor Malfunction. Common causes: oxidation or damage to sensor contacts, open or short circuit in wiring harness. Estimated repair cost: $33–111.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$33–111 (est.)

Symptoms

  • Incorrect operation of climate control
  • Inadequate temperature control in the cabin
  • Lack of reaction to sunlight

Causes

  • Oxidation or damage to sensor contacts
  • Open or short circuit in wiring harness
  • Solar load sensor fault
  • Problems with the climate control unit

How to Fix

  1. Check the integrity of the wiring harness and sensor contacts
  2. Test the solar load sensor with a multimeter
  3. Replace sensor if necessary
  4. Check the operation of the climate control after repair

Related codes

B24AAB24AB

FAQ

What does the B24A9 code mean?

B24A9 is an OBD-II diagnostic trouble code that indicates: Sunload Sensor Malfunction

What causes a B24A9 error code?

The most common causes of B24A9 include: Oxidation or damage to sensor contacts; Open or short circuit in wiring harness; Solar load sensor fault; Problems with the climate control unit.

How do I fix a B24A9 diagnostic trouble code?

To fix B24A9: Check the integrity of the wiring harness and sensor contacts. Test the solar load sensor with a multimeter. Replace sensor if necessary. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B24A9?

Yes, but get it checked soon

How much does it cost to fix B24A9?

The estimated repair cost for B24A9 is $33–111. Actual cost depends on your vehicle, location, and labor rates.

FRDEESPT

See also: Russian version · NationStat