C0639

Brake Pressure Sensor H Circuit/Open

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–167 (est.)

Symptoms

ABS/ESP indicator is on
ESP system does not work
Problems with the stability control system
Unusual brake behavior

Causes

Open circuit in the sensor wiring harness
Poor contact in the sensor connector
Malfunction of the pressure sensor itself
Problems with the ABS/ESP control module

How to Fix

Check the integrity of the wiring harness
Check the contacts in the sensor connector
Check the resistance of the pressure sensor
Check power and ground on the sensor
Replace sensor if necessary

Related codes

C003A C0040 C0110