C0030

Left Front Tone Wheel

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–167 (est.)

Symptoms

The ABS indicator on the dashboard is on
Disabling the ABS system
Disabling the ESP system
Unstable braking behavior

Causes

Damage to the tone ring (cracks, chips)
Tone ring is dirty
Wheel speed sensor malfunction
Problems with the sensor wiring harness
Corrosion or mechanical damage

How to Fix

Visually inspect the tone ring for damage
Cleaning the tone ring from dirt
Checking the Wheel Speed Sensor
Checking the integrity of the wiring harness
Replacing the tone ring if necessary

Related codes

C0031 C0032 C0033 C0034