C0025 code meaning
Brake Pedal Feedback Pressure Sensor Circuit
What C0025 means
C0025 covers the pressure sensor on the pedal feedback side of a decoupled or brake-by-wire system, the measuring partner of the feedback valve C0024. In such systems the pedal pushes fluid into a pedal feel simulator via a simulator valve the module can open or close, while separate sensors read pressure in the simulator circuit and in the wheel circuit. A patent for this layout reads the driver's request from a pressure sensor on the master cylinder side and describes a standstill self-test that opens the simulator valve and watches the pressure rise. The module sets C0025 for a signal out of range, an open or short, or a value that does not fit pedal travel. Pedal feel changes, assist may drop to a mechanical fallback, and the brake or ABS lamp lights. No manufacturer documents this code publicly.
C0025 at a glance
- Check engine lightUsually not
- Emissions testNot an emissions code
- Limp modePossible
- Repair difficultyWorkshop only
- Typical labor1.5 to 4 hours
- Clears after repairWhen cleared with a scanner
Symptoms of C0025
- Changed or abnormal pedal feel
- Loss of brake assist, driver messages
- ABS or brake warning lamp on
Common causes of C0025
- Most likelyFeedback pressure sensor out of range
- PossibleHarness or connector fault
- Less likelyInternal brake actuation unit fault
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Brake pedal feedback pressure sensor
What each part of C0025 means
| C | Chassis system: brakes, ABS, steering and suspension. |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 25 | The exact fault in that area. |
What to do next
- Note C0025 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 C0025
What does C0025 mean?
C0025 means "Brake Pedal Feedback Pressure Sensor Circuit". C0025 covers the pressure sensor on the pedal feedback side of a decoupled or brake-by-wire system, the measuring partner of the feedback valve C0024. It is a generic code, so it means the same on every make.
Is it safe to drive with C0025?
Drive gently and only to a workshop. With C0025 the car can go into limp mode (reduced power) to protect itself.
Will C0025 fail an emissions test?
C0025 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 C0025 to fix?
Difficulty: workshop only. A typical repair takes 1.5 to 4 hours of work. This is a job for a workshop.
Will C0025 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.