C0205
Stop Lamp Switch Circuit
The ABS or stability control module has detected a fault in the stop lamp switch circuit. The brake light switch tells the module whether the driver is braking and is used to coordinate ABS, traction control and cruise control.
The ABS or stability control module has detected a fault in the stop lamp switch circuit. The brake light switch tells the module whether the driver is braking and is used to coordinate ABS, traction control and cruise control.
Common causes
- high
Stop lamp switch failed or misadjusted
One of the most commonly reported causes for this code — check this first.
Typical part cost: $30-220
- medium
Wiring or connector fault
A plausible cause — test and verify before replacing parts.
Typical part cost: $30-220
See all causes + fix costs
Create a free Wrenchify account to unlock the rest for C0205.
Unlock causesFree forever · No credit card
First things to check
- 1Confirm the code with a scan tool and check for additional related codes.
- 2Inspect the relevant sensors, wiring, and connectors for damage or corrosion.
Get the full step-by-step diagnosis
Create a free Wrenchify account to unlock the rest for C0205.
Unlock diagnosisFree forever · No credit card
Related codes
See related trouble codes
Create a free Wrenchify account to unlock the rest for C0205.
Unlock related codesFree forever · No credit card
Frequently asked questions
What does C0205 mean?
C0205 means "Stop Lamp Switch Circuit". It is a generic OBD-II code that points to a fault in the chassis.
What are the most common causes of C0205?
stop lamp switch failed or misadjusted; wiring or connector fault; blown stop lamp fuse — these are the most commonly reported causes. Verify with a proper diagnosis before replacing parts, or use the Wrenchify app for a vehicle-specific diagnosis.
Can I keep driving with this code?
The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical. Use the Wrenchify app for a full diagnosis specific to your vehicle.
Get the full C0205 diagnosis for your vehicle
Year, make, model + step-by-step repair help — free plan included.