C12B7 Code: Meaning, Causes, and Symptoms | OBD2 Codes

C12B7 – ABS High Pressure Accumulator Pressure Sensor Circuit Short to Battery

 

C12B7 Possible Symptoms

 

Anti-Lock Brake System (ABS) Warning Light ON,Engine Light ON (or Service Engine Soon Warning Light)

 

C12B7 Possible Causes

 

Faulty Brake Pressure Modulator,Brake Pressure Modulator harness is open or shorted,Brake Pressure Modulator circuit poor electrical connection

 

C12B7 Description

 

The high pressure accumulator is attached to the brake pressure modulator and provides up to 18, 000 kPa (2, 600 psi) for use when applying the brakes. The Electronic Brake Control Module (EBCM) uses input from the high pressure accumulator sensor for more accurate control during braking and vehicle stability enhancement system event.