U302C

Ignition Output Off/On/Start

Severity

🔴 High

Can you drive?

Do not drive — repair immediately

Approx. repair cost

$6–167 (est.)

Symptoms

Engine won't start
Intermittent startup problems
Stalls while driving
Check engine light is flashing
Loss of engine power

Causes

Faulty ignition relay
Open or short circuit in the ignition circuit
Problems with the engine control unit
Oxidized contacts in the ignition circuit
Ignition switch malfunction

How to Fix

Check the condition of the ignition relay
Test the ignition circuit for opens and short circuits
Inspect and clean the contacts in the ignition circuit
Check the operation of the ignition switch
If necessary, replace the engine control unit

Related codes

U3000 U302D U302B