C0575Brake Pressure Sensor D Circuit Low
- Generic OBD-II code · Chassis
- Turns on the check-engine light
- Can trigger limp mode
- How the car detects it
- 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.
- What you may notice
- Check engine light with brake or stability warning (GM hybrids)
- Regenerative braking reduced, more friction braking
- Rear pressure reading near zero even when braking
- Likely causes
- LikelySignal line of sensor D shorted to ground
- PossibleSensor supply interrupted, output drops to near 0 V
- PossibleDefective pressure sensor
- Repair
- Hard · Usually a job for a workshop.Typical cost: €60 – €2,500
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.