C0575 code meaning
Brake Pressure Sensor D Circuit Low
Chassis system Generic code C05xx codes Check engine light
What C0575 means
Brake pressure sensor D is a further hydraulic pressure sensor whose position is set by the manufacturer. In GM's hybrid brake control modules of 2016–2019 it measures brake pressure at the left rear wheel, and C0575 is stored when its signal stays under 0.3 V for 0.1 s while the ignition is on, rated Type A with MIL after one trip. Without that value the module lacks the rear wheel pressure it uses to blend regenerative and friction braking. Older GM vehicles used the same number for something unrelated: the left front damper actuator circuit of the electronic suspension (Saab 9-5, and GM full-size trucks whose engine harness chafed on the vacuum pump pulley, PIT5307G). Typical causes are a short to ground, lost sensor supply or a failed sensor.
C0575 at a glance
- Check engine lightYes, usually on
- Emissions testNot an emissions code
- Limp modePossible
- Repair difficultyHard
- Typical labor0.5 to 4 hours
- Clears after repairWhen cleared with a scanner
Symptoms of C0575
- Check engine light with brake or stability warning (GM hybrids)
- Regenerative braking reduced, more friction braking
- Rear pressure reading near zero even when braking
Common causes of C0575
- Most likelySignal line of sensor D shorted to ground
- PossibleSensor supply interrupted, output drops to near 0 V
- PossibleDefective pressure sensor
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Brake pressure sensor dSensor wiringBrake control module
What each part of C0575 means
| C | Chassis system: brakes, ABS, steering and suspension. |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 75 | The exact fault in that area. |
What to do next
- Note C0575 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 C0575
What does C0575 mean?
C0575 means "Brake Pressure Sensor D Circuit Low". Brake pressure sensor D is a further hydraulic pressure sensor whose position is set by the manufacturer. It is a generic code, so it means the same on every make.
Is it safe to drive with C0575?
Drive gently and only to a workshop. With C0575 the car can go into limp mode (reduced power) to protect itself.
Will C0575 fail an emissions test?
C0575 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 C0575 to fix?
Difficulty: hard. A typical repair takes 0.5 to 4 hours of work. This is a job for a workshop.
Will C0575 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.