OBD Guide
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B14A1

Sunload Sensor Circuit Low/Open

B14A1 is an OBD-II diagnostic trouble code meaning: Sunload Sensor Circuit Low/Open. Common causes: solar load sensor fault, open or short circuit in wiring harness. Estimated repair cost: $22–89.

Severity
✅ Low
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$22–89 (est.)

Symptoms

  • Incorrect operation of climate control
  • Lack of automatic temperature adjustment in sunny weather
  • Check Engine Light Illuminates

Causes

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

How to Fix

  1. Check the integrity of the sensor wiring harness
  2. Check the contacts in the sensor connector
  3. Check sensor resistance (compare with factory values)
  4. Replace solar load sensor if necessary
  5. Check the operation of the climate control system after repair

Related codes

B14A2B14A3

FAQ

What does the B14A1 code mean?

B14A1 is an OBD-II diagnostic trouble code that indicates: Sunload Sensor Circuit Low/Open

What causes a B14A1 error code?

The most common causes of B14A1 include: Solar load sensor fault; Open or short circuit in wiring harness; Poor contact in the sensor connector; Malfunction of the climate control control unit.

How do I fix a B14A1 diagnostic trouble code?

To fix B14A1: Check the integrity of the sensor wiring harness. Check the contacts in the sensor connector. Check sensor resistance (compare with factory values). For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B14A1?

Yes, but get it checked soon

How much does it cost to fix B14A1?

The estimated repair cost for B14A1 is $22–89. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat