C0637

Brake Pressure Sensor G Circuit Low

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–167 (est.)

Symptoms

ABS or ESP indicator is on
Reduced braking performance
Activating the emergency brake system

Causes

Open or short circuit in the sensor wiring harness
Brake pressure sensor fault G
Poor contact in the sensor connector
Problems with power or grounding of the sensor

How to Fix

Check the integrity of the sensor wiring harness
Check sensor connectors for corrosion or damage.
Measure resistance and voltage at the sensor
If necessary, replace brake pressure sensor G

Related codes

C0635 C0636 C0638