OBD
C008A
TCS Mode Control
What it means
C008A means TCS Mode Control.
Check these first
- A failed traction control module
- Corrosion or damage in the traction control wiring
- Faulty wheel speed sensors or tone rings
- A brake system fault such as low fluid
- A software fault in the traction control module
What to do next
- Read the traction control module for stored faults
- Inspect the traction control wiring and connectors
- Check the wheel speed sensors and tone rings
- Check the brake fluid level and the brake switches
- Clear the code and retest
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Updated
Generic SAE J2012 definition. Last updated 2026-10-10.