C0136Stop Lamp Switch Circuit
- Generic OBD-II code · Chassis
- How the car detects it
- No public J2012 list, NHTSA bulletin or manufacturer table carries C0136, so it cannot be matched to a vehicle. Its title is word for word that of C0205, and at GM the brake switch input of ABS/TCS modules is C0161; which number a given car uses can only come from its own service data. The function itself is well described. Bosch patented a monitor for ABS and traction control units that stores a suspected short or stuck switch when the signal is already present at ignition-on, and an open line when no signal appears during a later drive; with automatic gearboxes it waits for three repeats. A second Bosch patent rechecks a switch reported stuck high by demanding a clean low-high-low pattern at standstill. Stop lamps and cruise control share this signal.
- What you may notice
- Stop lamps stay on or do not work
- Cruise control will not engage or cancels
- ABS or stability warning lamp may come on
- Likely causes
- LikelyBrake light switch misadjusted, worn or sticking
- PossibleOpen or short in the switch circuit or connector
- RareBlown stop lamp fuse
- Repair
- Easy · Often possible to do yourself.Typical cost: €20 – €150
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.