C0246ABS/TCS Control Module Internal Performance
- Generic OBD-II code · Chassis
- Can trigger limp mode
- How the car detects it
- The accessible J2012 tables lack C0246, and an internal brake module fault is not what any maker uses it for. Two makers use it differently. In the 2011 Saab 9-5 (GM) it is set by other modules on the fast CAN network when the periodic wheel speed message from the brake module stops arriving: Invalid Data Received From Electronic Brake Control Module. Toyota stores it in the skid control ECU of the 2014 to 2020 4Runner together with C0226, C0236 and C0256; Tech Tip T-TT-0597-20 traces the ABS lamp to a ground that fluctuates when aftermarket LED or HID headlight bulbs are fitted. The meaning therefore depends on make and on which module holds the code. On GM, start with the wheel speed sensors.
- What you may notice
- ABS warning lamp on
- Functions that use wheel speed run degraded in other modules (GM)
- Likely causes
- PossibleOn GM vehicles wheel speed message from the brake module missing on the CAN bus
- PossibleOn Toyota 4Runner unstable ECU ground caused by aftermarket LED or HID headlight bulbs
- RareDamaged brake module connector or ground wires
- Repair
- Medium · Usually a job for a workshop.Typical cost: €0 – €900
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.