B120E
Left Heated Seat HI Indicator Control Circuit High
B120E is an OBD-II diagnostic trouble code meaning: Left Heated Seat HI Indicator Control Circuit High. Common causes: short circuit in control circuit, heating temperature sensor malfunction. Estimated repair cost: $56–167.
Symptoms
- Flashing or constant heating indicator light
- Turning off the heated seat
- Error message on the dashboard
Causes
- Short circuit in control circuit
- Heating temperature sensor malfunction
- Wiring harness damage
- Oxidation of contacts
- Seat control unit failure
How to Fix
- Visual inspection of the wiring harness and contacts
- Checking the resistance of the temperature sensor
- Diagnostics of the seat control unit
- Replacing damaged components
- Resetting the error and testing the system
Related codes
FAQ
What does the B120E code mean?
B120E is an OBD-II diagnostic trouble code that indicates: Left Heated Seat HI Indicator Control Circuit High
What causes a B120E error code?
The most common causes of B120E include: Short circuit in control circuit; Heating temperature sensor malfunction; Wiring harness damage; Oxidation of contacts.
How do I fix a B120E diagnostic trouble code?
To fix B120E: Visual inspection of the wiring harness and contacts. Checking the resistance of the temperature sensor. Diagnostics of the seat control unit. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with B120E?
Limited driving only, diagnose soon
How much does it cost to fix B120E?
The estimated repair cost for B120E is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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