C0540

Brake Pressure Sensor A Circuit/Open

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–167 (est.)

Symptoms

ABS light is on
Reduced braking performance
Security system activation
Unstable brake operation

Causes

Broken wires in the sensor harness
Poor contact in the sensor connector
Pressure sensor malfunction
Wiring harness damage
ABS module malfunction

How to Fix

Check the integrity of the wiring harness
Inspect the sensor connector for corrosion or damage.
Check sensor resistance (according to manufacturer's specifications)
Replace pressure sensor if necessary
Reset the error and take a test drive

Related codes

C0541 C0542 C0543