C012D

Brake Boost Regulation Pressure Sensor

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–167 (est.)

Symptoms

Hard brake pedal
CHECK ENGINE indicator lights up
Reduced braking performance
Activation of the ABS system for no reason

Causes

Pressure sensor malfunction
Open or shorted wiring harness
Poor contact in the sensor connector
Brake ECU malfunction

How to Fix

Check the pressure sensor with a multimeter
Inspect the wiring harness and connectors for damage
Clean or replace the sensor if dirty
Test the system using a scanner

Related codes

C012 invasions ser