C2106
Stop Lamp Switch Constant ON Malfunction
C2106 is an OBD-II diagnostic trouble code meaning: Stop Lamp Switch Constant ON Malfunction. Common causes: brake light switch stuck, open or short circuit in wiring harness. Estimated repair cost: $22–56.
Symptoms
- Steady brake lights
- Incorrect operation of the ABS/ESP system
- Errors in other systems related to the brake light switch
Causes
- Brake light switch stuck
- Open or short circuit in wiring harness
- Control module malfunction
- Incorrect switch adjustment
How to Fix
- Check the mechanical condition of the brake light switch
- Check the switch circuit for open circuit and short circuit
- Check the operation of the switch using a diagnostic scanner
- Replace the switch if necessary
- Adjust the switch position
Related codes
FAQ
What does the C2106 code mean?
C2106 is an OBD-II diagnostic trouble code that indicates: Stop Lamp Switch Constant ON Malfunction
What causes a C2106 error code?
The most common causes of C2106 include: Brake light switch stuck; Open or short circuit in wiring harness; Control module malfunction; Incorrect switch adjustment.
How do I fix a C2106 diagnostic trouble code?
To fix C2106: Check the mechanical condition of the brake light switch. Check the switch circuit for open circuit and short circuit. Check the operation of the switch using a diagnostic scanner. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with C2106?
Do not drive — repair immediately
How much does it cost to fix C2106?
The estimated repair cost for C2106 is $22–56. Actual cost depends on your vehicle, location, and labor rates.
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