B120A
Passenger Seat Cushion Temperature Sensor
B120A is an OBD-II diagnostic trouble code meaning: Passenger Seat Cushion Temperature Sensor. Common causes: temperature sensor malfunction, open or short circuit in wiring harness. Estimated repair cost: $56–167.
Symptoms
- Seat heating is not working properly
- Error indication on the dashboard
- Disabling the climate control system
Causes
- Temperature sensor malfunction
- Open or short circuit in wiring harness
- Problems with connectors
- Seat control module malfunction
How to Fix
- Check the integrity of the wiring harness to the sensor
- Check the resistance of the temperature sensor
- Inspect connectors for corrosion or damage
- If necessary, replace the temperature sensor
Related codes
FAQ
What does the B120A code mean?
B120A is an OBD-II diagnostic trouble code that indicates: Passenger Seat Cushion Temperature Sensor
What causes a B120A error code?
The most common causes of B120A include: Temperature sensor malfunction; Open or short circuit in wiring harness; Problems with connectors; Seat control module malfunction.
How do I fix a B120A diagnostic trouble code?
To fix B120A: Check the integrity of the wiring harness to the sensor. Check the resistance of the temperature sensor. Inspect connectors for corrosion or damage. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with B120A?
Do not drive — repair immediately
How much does it cost to fix B120A?
The estimated repair cost for B120A is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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