OBD-II Generic Error Code P0314: How to Fix It

Q: What does P0314 mean?

P0314 indicates a single cylinder misfire, but the engine control module cannot determine which cylinder is misfiring.

Q: Can I drive with a P0314 code?

Driving with a misfire can damage the catalytic converter and engine. It's best to diagnose and fix the issue promptly.

Q: What are common causes of P0314?

Common causes include faulty spark plugs, ignition coils, fuel injectors, vacuum leaks, or low compression.

Q: How do I clear P0314 after repair?

Use an OBD2 scanner to clear the code after repairs. The code will return if the issue is not fixed.

Q: Do I need a special scanner for P0314?

Any generic OBD2 scanner can read and clear P0314. Advanced scanners may provide live data to help identify the misfiring cylinder.

Abstract

Error code P0314 means your car's computer has detected a misfire in a single cylinder, but can't identify which one. This can cause rough idling, poor fuel economy, and increased emissions. Follow this guide to pinpoint and resolve the issue.