C05A4

Wheel Speed Sensors Supply Circuit Low

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$33–167 (est.)

Symptoms

ABS/ESP indicator is on
Incorrect operation of the ABS/ESP system
Loss of wheel speed data on the dashboard

Causes

Damaged wiring harness to speed sensors
Short circuit in the sensor power supply circuit
ABS/ESP module malfunction
Poor contact in sensor connectors
Malfunction of the wheel speed sensors themselves

How to Fix

Check the integrity of the wiring harness to the speed sensors
Check the voltage in the sensor power supply circuit
Check sensor connectors and contacts
Check the serviceability of the wheel speed sensors
Check the ABS/ESP module for faults

Related codes

C05A0 C05A1 C05A2 C05A3