C0202 code meaning
Brake Pedal Position Sensor
What C0202 means
No accessible J2012 list, NHTSA bulletin or maker index mentions C0202; the code is publicly unverifiable, and C0230 carries an almost identical title. A brake pedal position sensor reports how far the pedal moves instead of a mere on/off state. GM patented a resistive design with two outputs: one goes to the engine module for diagnosis, the other to the brake module, which uses it to release the shift interlock. Besides out-of-range checks, GM looks for faults inside the valid range by weighting how much the reading changes while the interlock is released. Bosch's PWG travel sensor works without contact through a Hall element and sends two PWM signals so the control unit can compare them. Such sensors are needed above all where braking is blended with energy recovery.
C0202 at a glance
- Check engine lightUsually not
- Emissions testNot an emissions code
- Limp modeNot expected
- Repair difficultyMedium, DIY possible
- Typical labor0.3 to 1.5 hours
- Clears after repairWhen cleared with a scanner
Symptoms of C0202
- Brake or stability warning lamp on
- Shift lever cannot be moved out of park, cruise control inactive
Common causes of C0202
- Most likelyWorn, misadjusted or not relearned pedal position sensor
- PossibleLoose or corroded connector at the pedal
- Less likelyPedal bracket or return spring binding
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Brake pedal position sensorBrake control moduleBrake pedal assembly
What each part of C0202 means
| C | Chassis system: brakes, ABS, steering and suspension. |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 02 | The exact fault in that area. |
What to do next
- Note C0202 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 C0202
What does C0202 mean?
C0202 means "Brake Pedal Position Sensor". No accessible J2012 list, NHTSA bulletin or maker index mentions C0202; the code is publicly unverifiable, and C0230 carries an almost identical title. It is a generic code, so it means the same on every make.
Is it safe to drive with C0202?
C0202 does not normally turn on the check engine light by itself. Watch for the symptoms above and have it checked soon.
Will C0202 fail an emissions test?
C0202 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 C0202 to fix?
Difficulty: medium. A typical repair takes 0.3 to 1.5 hours of work. A careful DIY repair is possible with basic tools and a scanner.
Will C0202 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.