C0023

Stop Lamp Control

Severity

⚠️ Medium

Can you drive?

Do not drive — repair immediately

Approx. repair cost

$33–111 (est.)

Symptoms

Brake lights don't work
The malfunction indicator on the dashboard is on
Problems with cruise control (if any)

Causes

Open or short circuit in wiring harness
Brake pedal sensor malfunction
Damaged brake light relay
Blown fuse
Problems with the control unit

How to Fix

Check fuses and replace if necessary
Inspect the wiring harness for damage
Check the brake pedal sensor
Diagnose brake light relay
Scan the control unit for errors

Related codes

C0024 C0025 P0571