C0582 code meaning
Brake Booster Motor A Phase U-V-W Circuit Range/Performance
Chassis system Generic code C05xx codes Check engine light
What C0582 means
C0582 is the plausibility check of the drive stage for booster motor A and the best documented code of this group. GM's 2016/2019 hybrid tables switch an upper and a lower transistor of different phases in all six pairings and trip above 150 A; the 2023/2025 EBCM tables expect an idle phase at 1.65 V during start-up and also file a temperature-sensor plausibility test here. Type A, MIL. GM bulletin 22-NA-100 (2022 Cadillac XT5/XT6, Chevrolet Blazer, GMC Acadia with eBoost) reports check engine, traction and ABS lamps and possible loss of assist in a panic stop: reprogram if stored, new BSCM if active. Stellantis tells Jeep Wagoneer dealers to renew eBooster and BSCM together; GM's PIC6614 says Lyriq codes may show only in OnStar data.
C0582 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 C0582
- Check engine, traction control and ABS lamps on together
- Brake assist failure message, abnormal pedal feel
- Reduced assist especially during hard or panic braking
Common causes of C0582
- Most likelySoftware fault in the brake system control module (GM 22-NA-100, fixed by reprogramming)
- PossibleDefective bridge driver or shorted transistor pair in the drive stage
- PossibleInternal fault of the eBooster unit, requiring booster and module replacement
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Brake booster motor aBrake system control module
What each part of C0582 means
| C | Chassis system: brakes, ABS, steering and suspension. |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 82 | The exact fault in that area. |
What to do next
- Note C0582 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 C0582
What does C0582 mean?
C0582 means "Brake Booster Motor A Phase U-V-W Circuit Range/Performance". C0582 is the plausibility check of the drive stage for booster motor A and the best documented code of this group. It is a generic code, so it means the same on every make.
Is it safe to drive with C0582?
Drive gently and only to a workshop. With C0582 the car can go into limp mode (reduced power) to protect itself.
Will C0582 fail an emissions test?
C0582 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 C0582 to fix?
Difficulty: workshop only. A typical repair takes 0.5 to 4 hours of work. This is a job for a workshop.
Will C0582 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.