C0638

Brake Pressure Sensor G Range/Performance

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–167 (est.)

Symptoms

Check Engine Light Is On
Unstable operation of the brake system
Loss of braking efficiency

Causes

Brake pressure sensor malfunction
Open or short circuit in wiring harness
Poor contact in the sensor connector
Problems with the ECU

How to Fix

Check the integrity of the wiring harness and sensor connector
Test the brake pressure sensor with a multimeter
Replace sensor if necessary
Clear error codes and check the system

Related codes

C0637 C0639 C0051