C0542

Brake Pressure Sensor B Circuit Low

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–167 (est.)

Symptoms

ABS/ESP indicator is on
Reduced braking performance
Disabling the ESP system

Causes

Brake pressure sensor fault B
Open or short circuit in wiring harness
Poor contact in the sensor connector
Problems with the ABS/ESP control unit

How to Fix

Check the integrity of the sensor wiring harness
Check the contacts in the sensor connector
Check resistance of brake pressure sensor B
Replace sensor if necessary
Check ABS/ESP control unit

Related codes

C0540 C0541 C0543