C0597Brake System Control Module A Performance
- Generic OBD-II code · Chassis
- Turns on the check-engine light
- Can trigger limp mode
- How the car detects it
- C0597 is a summary code for the first brake system control module: it cannot carry out its function properly, and the failure type byte narrows the cause. Toyota uses C059746 (calibration or parameter memory) on 2020–22 Corolla, Corolla Cross and RAV4 with a parking brake warning, cured by reprogramming the skid control unit (T-SB-0078-21), and C059704 (internal failure) on the 2022–23 Tundra, covered by a software campaign. Stellantis asks for current software before an ABS module and booster are replaced for C0597-00 on the 2021–22 Grand Cherokee and 4xe. On 2026 GM full-size SUVs C0597 replaced C055F: a Service Brake System message led to a new master cylinder (PIT6450A), and cold-weather cases trace to weak battery voltage (PIT6476).
- What you may notice
- Service Brake System or parking brake malfunction message
- ABS, stability control and possibly check engine lamps on
- Changed brake pedal effort
- Likely causes
- LikelyOutdated or corrupted brake module software or calibration data
- PossibleLow battery voltage or poor power and ground connections, especially in cold
- PossibleInternal fault of the brake control unit or integrated master cylinder
- Repair
- Workshop only · Usually a job for a workshop.Typical cost: €100 – €3,000
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.