P2A00 & P0300 Misfire

Originally Posted by Jordo!

That's a slow responding O2 sensor code, bank 1, sensor 1.

It could be:

1. Dirty/Bad MAF sensor or wire issue.

2. Damage to sensor or wire on the primary bank 1 O2 (what the code actually means).

3. Something screwy related to the CAI diameter being different from OEM or possibly not being clamped down well enough (MAF's are VERY sensitive to vibration and airflow tumble effects on this car).

Try swapping or cleaning the MAF's. The the problem doesn't move/go away, look into replacing the Bank 1 primary O2.

Originally Posted by Kmccarthy714

Yea, thanks for the response, i have previosuly swapped MAF sensors and code came back same bank. Like i said i smoke tested the intake, no leaks found. My next try is to swap the A/F sensors and hope the code moves otherwise, im lost. Thanks for the help ill update you as soon as i find time to do the swap.