U302C
Ignition Output Off/On/Start
U302C is an OBD-II diagnostic trouble code meaning: Ignition Output Off/On/Start. Common causes: faulty ignition relay, open or short circuit in the ignition circuit. Estimated repair cost: $6–167.
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
Error U302C by Vehicle Brand
FAQ
What does the U302C code mean?
U302C is an OBD-II diagnostic trouble code that indicates: Ignition Output Off/On/Start
What causes a U302C error code?
The most common causes of U302C include: Faulty ignition relay; Open or short circuit in the ignition circuit; Problems with the engine control unit; Oxidized contacts in the ignition circuit.
How do I fix a U302C diagnostic trouble code?
To fix U302C: 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. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U302C?
Do not drive — repair immediately
How much does it cost to fix U302C?
The estimated repair cost for U302C is $6–167. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat