Acura P0304 Error Code: How to Fix It

Q: What does Acura error code P0304 mean?

P0304 means cylinder 4 in your Acura engine is misfiring. This occurs when cylinder 4 fails to fire properly, causing rough idling, reduced power, and poor fuel economy.

Q: Can I drive my Acura with a P0304 code?

You should avoid driving with P0304 as continued misfiring can damage the catalytic converter and cause more expensive repairs. Have it diagnosed and repaired promptly.

Q: What causes cylinder 4 to misfire in an Acura?

Common causes include worn spark plugs, faulty ignition coils, clogged fuel injectors, vacuum leaks, low compression, or carbon buildup in the combustion chamber.

Q: How much does it cost to fix P0304 on an Acura?

Repair costs vary from $50-100 for spark plugs to $200-400 for ignition coils or fuel injectors. More serious issues like low compression can cost $1000+ to repair.

Q: How long does it take to fix P0304?

Simple fixes like spark plug replacement take 30-60 minutes. More complex diagnosis and repairs can take 2-4 hours depending on the root cause.

Abstract

The P0304 error code indicates that your Acura's engine control unit has detected a misfire in cylinder 4. This means cylinder 4 is not firing properly, which can cause rough idling, reduced power, poor fuel economy, and potential engine damage if left unaddressed.