P0203High urgency
Injector Circuit Open (Cylinder 3)
Fuel System · Fuel Injectors
⛔ Active misfire risk. Do not drive at highway speeds. Go directly to a shop.
What this means
Open circuit in the Cylinder 3 fuel injector circuit. The ECU cannot confirm the injector solenoid is connected.
Likely causes
- Open injector wiring harnessMost common
- Failed injector solenoidMost common
- Corroded connector pinsCommon
Estimated repair cost
Injector replacement$150 – $400
Wiring repair$100 – $300
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Frequently asked questions about P0203
What does P0203 mean?
Open circuit in the Cylinder 3 fuel injector circuit. The ECU cannot confirm the injector solenoid is connected.
Is P0203 serious?
Active misfire risk. Do not drive at highway speeds. Go directly to a shop.
How much does it cost to fix P0203?
Repair costs for P0203 range from $150 – $400 depending on the root cause and your vehicle.
Can I drive with P0203?
No — this code indicates a serious issue. Stop driving and have the vehicle inspected immediately.