OBD-II Error Code P0280: Injector Circuit High Cyl 7 - How to Fix It

Q: Can I drive with error code P0280?

It's not recommended. Driving with a faulty injector circuit can cause misfires, reduced fuel economy, and potential damage to the catalytic converter.

Q: What causes injector circuit high voltage?

Common causes include a shorted injector, damaged wiring, corrosion in the connector, or a faulty ECM. A high voltage reading typically means there's a short to battery power or a grounded circuit.

Q: How much does it cost to fix P0280?

If it's just a wiring repair, parts cost may be under $20. Injector replacement can range from $50 to $200 per injector. ECM replacement can be $200-$1000 or more. Labor costs vary by shop.

Q: Will clearing the code fix P0280?

Clearing the code with an OBD-II scanner will remove the check engine light temporarily, but if the underlying issue isn't fixed, the code will return.

Q: What other codes are related to P0280?

Other injector circuit codes for different cylinders include P0201-P0208 (low voltage) and P0261-P0272 (high voltage). P0280 is specific to cylinder 7 high voltage.

Abstract

Error code P0280 indicates a high voltage or short circuit in the fuel injector circuit for cylinder 7. This can cause misfires, rough idling, and reduced engine performance. This guide will help you diagnose and fix the issue step by step.