C0597 code meaning
Brake System Control Module A Performance
Chassis system Generic code C05xx codes Check engine light
What C0597 means
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).
C0597 at a glance
- Check engine lightYes, usually on
- Emissions testNot an emissions code
- Limp modePossible
- Repair difficultyWorkshop only
- Typical labor0.5 to 4 hours
- Clears after repairWhen cleared with a scanner
Symptoms of C0597
- Service Brake System or parking brake malfunction message
- ABS, stability control and possibly check engine lamps on
- Changed brake pedal effort
Common causes of C0597
- Most 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
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Bscm aBrake system control module
What each part of C0597 means
| C | Chassis system: brakes, ABS, steering and suspension. |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 97 | The exact fault in that area. |
What to do next
- Note C0597 and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about C0597
What does C0597 mean?
C0597 means "Brake System Control Module A Performance". 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. It is a generic code, so it means the same on every make.
Is it safe to drive with C0597?
Drive gently and only to a workshop. With C0597 the car can go into limp mode (reduced power) to protect itself.
Will C0597 fail an emissions test?
C0597 is not an emissions code, so on its own it usually does not fail an emissions test. Other stored codes or a lit check engine light still can.
How hard is C0597 to fix?
Difficulty: workshop only. A typical repair takes 0.5 to 4 hours of work. This is a job for a workshop.
Will C0597 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.