C0089TCS Disable Switch
- Generic OBD-II code · Chassis
- How the car detects it
- Covers the driver switch that turns traction (or stability) control off, and its circuit to the ABS/ESC module. Pressing the switch tells the module to disable intervention and light the traction-off indicator; this code is set when the switch signal is stuck, implausible, or the circuit is open or shorted, for example a switch that reads permanently pressed or a broken wire. A stuck-on switch could keep traction control disabled, which is a safety concern, so the module may ignore the switch and default to control enabled. Traction-control patents describe driver-selectable disabling of the intervention. A fault affects the on/off function and sets the ABS/ESC warning lamp while base braking remains. No code-specific public bulletin was confirmed; the entry follows the SAE J2012 generic definition.
- What you may notice
- Traction control cannot be toggled
- Traction-off indicator wrong
- ABS/ESC warning lamp on
- Likely causes
- LikelySwitch stuck or reads permanently pressed
- PossibleOpen or shorted switch circuit
- RareCorroded or loose connector
- Repair
- Easy · Often possible to do yourself.Typical cost: €20 – €250
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.