What does this code mean?
The wording below belongs to the named make and communication. Match the complete code, reporting module, model year and engine before applying it.
A code identifies a detected condition, not a part that must automatically be replaced.
Manufacturer wording
Source wording can vary by vehicle and suffix. It is shown as written, not as a universal diagnosis.
C059746Brake System Control Module "A" Calibration / Parameter Memory FailureManufacturer communications
6Original wording in English
CADILLAC, CHEVROLET, GMC
Reported code forms C0597
This preliminary information communicates an issue with a Service Brake system message and DTC C0597 C055F. Dealers are to replace the brake master cylinder.
CADILLAC, CHEVROLET, GMC
Reported code forms C0597
This preliminary information communicates an issue with a Service Brake system message and DTC C0597. Dealers are to replace the brake master cylinder.
TOYOTA
Reported code forms C059704
TI: TECHNICAL INSTRUCTIONS FOR SPECIAL SERVICE CAMPAIGN 23TC06 Electronic Parking Brake (EPB) DTC C059704 Certain 2022 & 2023 Model Year Tundra
TOYOTA
Reported code forms C059746
TSB: Some 2021 ? 2022 model year Corolla and Corolla Hatchback and 2021 model year RAV4 vehicles may exhibit a Parking Brake Malfunction warning message on the Multi-information Display (MID) with Diagnostic Trouble…
JEEP
Reported code forms C0597-00
MODULE, Anti-Lock Brake System & BOOSTER, Power Brake Prior to replacing this for a C0597-00 fault code, ensure that the software is at the latest level.
TOYOTA
Reported code forms C059746
TSB: Some 2020 ? 2021 model year Corolla, Corolla Hatchback, and RAV4 vehicles may exhibit a Parking Brake Malfunction warning message on the Multi-information Display (MID) with Diagnostic Trouble Code (DTC) C059746…
Check vehicle applicability
20A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
| Make | Model | Model year |
|---|---|---|
| Cadillac | ESCALADE | 2026 |
| Cadillac | ESCALADE ESV | 2026 |
| Chevrolet | SILVERADO 1500 | 2026 |
| Chevrolet | SUBURBAN 1500 | 2026 |
| Chevrolet | TAHOE | 2026 |
| GMC | SIERRA 1500 | 2026 |
| GMC | YUKON | 2026 |
| GMC | YUKON XL | 2026 |
| Jeep | GRAND CHEROKEE | 2021 |
| Jeep | GRAND CHEROKEE 4XE | 2022 |
| Toyota | COROLLA | 2022 |
| Toyota | COROLLA | 2021 |
Before replacing a part
Record codes and freeze-frame data. Check battery condition, related codes and visible wiring or hose damage. Follow the vehicle's diagnostic procedure and test results before replacing parts.
Can I keep driving?
A code alone cannot establish whether driving is safe. A flashing malfunction light, severe shaking, overheating, oil-pressure warning or loss of braking or steering needs prompt attention. Stop in a safe place and seek assistance when control or engine safety is affected. Follow the vehicle handbook.