OBD-II code · Chassis
C0405 Traction Control Active Too Long
TCS regulation has been continuously active longer than allowed, suggesting persistent low-friction conditions or a sensor fault.
Is it safe to drive with C0405?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- PossiblePersistent low-friction surface
- PossibleWheel speed sensor drift
Symptoms
- ABS warning light on
- ESC/stability control deactivated
- Possible reduced brake assist
- Speedometer may behave erratically
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.5–3 h
- Emissions test
- Usually unaffected
- Parts involved
- ABS Control Module, Wheel Speed Sensors
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.