OBD Guide
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B1412

Ambient Temperature Sensor Circuit

B1412 is an OBD-II diagnostic trouble code meaning: Ambient Temperature Sensor Circuit. Common causes: open or short circuit in the sensor circuit, ambient temperature sensor malfunction. Estimated repair cost: $11–56.

Severity
✅ Low
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$11–56 (est.)

Symptoms

  • Incorrect ambient temperature readings
  • Incorrect operation of the climate control system
  • Check Engine Light Illuminates

Causes

  • Open or short circuit in the sensor circuit
  • Ambient temperature sensor malfunction
  • Wiring harness damage
  • Problems with contacts in connectors

How to Fix

  1. Check the integrity of the sensor circuit
  2. Check the resistance of the ambient temperature sensor
  3. Inspect the wiring harness for damage
  4. Check contacts in connectors
  5. Replace sensor if necessary

Related codes

B1411B1413

FAQ

What does the B1412 code mean?

B1412 is an OBD-II diagnostic trouble code that indicates: Ambient Temperature Sensor Circuit

What causes a B1412 error code?

The most common causes of B1412 include: Open or short circuit in the sensor circuit; Ambient temperature sensor malfunction; Wiring harness damage; Problems with contacts in connectors.

How do I fix a B1412 diagnostic trouble code?

To fix B1412: Check the integrity of the sensor circuit. Check the resistance of the ambient temperature sensor. Inspect the wiring harness for damage. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B1412?

Limited driving only, diagnose soon

How much does it cost to fix B1412?

The estimated repair cost for B1412 is $11–56. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat