C0116

Stop Light Switch Circuit Malfunction

Severity

⚠️ Medium

Can you drive?

Do not drive — repair immediately

Approx. repair cost

$22–56 (est.)

Symptoms

Brake lights don't work
Cruise control does not activate
Check Engine light comes on
ABS may not work correctly

Causes

Faulty brake light switch
Open or short circuit in wiring harness
Poor contact in connectors
Problems with the engine control unit (ECU)

How to Fix

Check the operation of the brake lights
Inspect the wiring harness for damage
Check the brake light switch with a multimeter
Replace the switch if necessary
Clean connector contacts
Check the circuit for open or short circuit

Related codes

C0115 C0117 P0571