I'm getting a P0420 error on my car again.
I own a 1999 Toyota Avalon XLS V6 3.0L with 193,800+ miles on it.
I have recently already had my catalytic converter replaced May of this year, 2017 ($523) as well as the O2 Sensor (Bank 1, Sensor 1). As of today, I just had the ignition coil packs replaced (3 total) due to cylinder misfires (cylinders 2, 5, and 6- P0302, P0305, P0306 respectively). Those codes are gone, but now I'm getting the P0420 code again. Any ideas on what may be causing this to pop up again? I really don't have the money to take it to the shop for another replacement. Should I check the mass airflow sensor?
Thank you,
COnochie
-I have reset the computer and my check engine light is off again. I will provide updates as they come.
I own a 1999 Toyota Avalon XLS V6 3.0L with 193,800+ miles on it.
I have recently already had my catalytic converter replaced May of this year, 2017 ($523) as well as the O2 Sensor (Bank 1, Sensor 1). As of today, I just had the ignition coil packs replaced (3 total) due to cylinder misfires (cylinders 2, 5, and 6- P0302, P0305, P0306 respectively). Those codes are gone, but now I'm getting the P0420 code again. Any ideas on what may be causing this to pop up again? I really don't have the money to take it to the shop for another replacement. Should I check the mass airflow sensor?
Thank you,
COnochie
-I have reset the computer and my check engine light is off again. I will provide updates as they come.