Chassis, generic

C0230 Brake Pedal Position Sensor Circuit

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modeNo

C0230 is in none of the accessible J2012 tables and in no NHTSA bulletin or manufacturer index, so it cannot be traced to a vehicle. The title points to the electrical side of a brake pedal position sensor: a supply, signal or ground line that is open or shorted, so the reading falls outside the band the module accepts. GM's patent for a two-output resistive sensor names these out-of-range low and high conditions as the standard on-board check before it adds a test for faults within the range. Bosch's Hall-type PWG sensor delivers two independent PWM outputs; if one disappears or both disagree, the controller can tell a wiring fault from a real pedal movement. Expected effects are stop lamp or cruise control trouble, a lit warning lamp and, on hybrids, limited brake blending.

Likely causes

Open or shorted supply, signal or ground wire of the sensor
Corroded or loose connector at the pedal sensor
Internal sensor fault (worn track, failed Hall element)

Symptoms

  • Brake or stability warning lamp on
  • Stop lamps or cruise control behave incorrectly

Repair estimate

DifficultyMediumDIY possible
Parts and labour€30–350
Time0.3–1.5 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

brake pedal position sensorsensor wiring

Related codes

C0202C0042C0043C0562

References: patents.google.com, eenewseurope.com.