Chevrolet C12B2: Master Cylinder Pressure Sensor Short to Ground or Open
Is your scanner showing Chevrolet C12B2?
No worries. We'll show you what it means and how to deal with it.
Chevrolet C12B2: Master Cylinder Pressure Sensor Short to Ground or Open
OVERVIEWWhat Does The Chevrolet C12B2 Code Mean?
This code indicates that the MCP sensor is either open or shorted to ground.
Conditions for setting the DTC: The ignition is ON. Ignition voltage is greater than 10 volts. The brake pedal is not applied.
What Are The Potential Causes Of The Chevrolet C12B2 Code?
Below are some potential causes of this DTC:
- Internal sensor failure is detected.
- Improper relearn performed
- A short to battery is detected on the sensor signal circuit.
- A short to ground or open is detected signal circuit.
- Signal is erratic and changes faster than physically allowed.
Recommended Parts
Below are some recommended auto parts to help you address the trouble code affecting your vehicle and get it running smoothly again:
>>> WORKPRO 582-piece Crimp Terminals, Wire Connectors, Heat Shrink Tube, Electrical Repair Kit
>>> ACDelco 15688634 GM Original Equipment Brake Master Cylinder Diaphragm Position Sensor
Note: During the purchasing process, please check carefully whether the part you want to buy fits your car!
Reference Sources
Chevrolet Volt Hybrid DTC – OBDG01 HYBRID Diagnostics Document, page 561.
