Trouble codes › P0204
P0204 Injector Circuit/Open - Cylinder 4
Fuel and air
P0204 means the cylinder 4 fuel injector's electrical circuit is open or faulty, so that cylinder may not be getting fuel.
The engine computer has found an open or faulty electrical circuit for the cylinder 4 fuel injector.
Expect a misfire on cylinder 4. If the check-engine light flashes, stop driving; otherwise get it fixed soon.
Common causes
- An unplugged or corroded injector connector
- A broken wire in the injector harness
- A failed injector coil
- An injector driver fault in the engine computer (rare)
Symptoms
- Misfire or rough running (often with P0304)
- Loss of power
- Check-engine light
What to check first
- Check the injector connector.
- Measure the injector's resistance and compare with the others.
- Check for power at the connector with the key on.
- Inspect the harness for damage.
What does P0204 mean on your vehicle?
The likely cause depends on your engine. iRepair researches your exact year, make, model and engine (service bulletins, recalls and owner reports) and tells you what to check first. Your first 3 questions are free.
Ask iRepair about P0204No scanner? Most auto parts stores read check-engine codes for free.
Related codes
General guidance for P0204 on most vehicles. Some makers use the same code a little differently; confirm in the service information for your vehicle, put safety first, and see a professional when in doubt.