Infiniti P0301 Error Code: How to Fix It

Q: Can I drive with P0301 code?

You should not drive extensively with P0301 as cylinder misfires can damage the catalytic converter and cause further engine problems. Get it diagnosed and repaired as soon as possible.

Q: How much does it cost to fix P0301?

If it's just an ignition coil, expect to pay $80-200 for the part plus labor. Spark plugs cost $10-30 each. More serious issues like fuel injectors or internal engine problems can cost $300-2000+.

Q: What causes P0301 on Infiniti VQ35 engines?

The most common causes are worn ignition coils (very common on VQ35), fouled spark plugs, clogged fuel injectors, vacuum leaks, or worn engine internals like valves or piston rings.

Q: Will P0301 clear itself?

No, P0301 will not clear itself until the underlying problem is fixed. The code may go away temporarily but will return as the engine computer continues to detect the misfire.

Q: How do I know which cylinder is cylinder 1?

On most Infiniti V6 engines, cylinder 1 is the front cylinder on the passenger side (right side when facing the engine). Consult your owner's manual or engine bay diagram to confirm the cylinder numbering for your specific model.

Abstract

The P0301 error code indicates a misfire detected in cylinder 1 of your Infiniti engine. This is especially common on VQ35 engines where worn ignition coils are the primary culprit. While this may seem concerning, most P0301 misfires can be resolved with basic diagnostic steps and component replacement.