Your 02 sensors are probably fine, sorry for the delayed response... my widebody G35 apparently had the chain snap, out of every car with a chain my car was the one that got the bullet. its most likely a timing issue, my engine had a bent valve due to the chain being snapped and setting the timing off.
I got the P420 code , will the 02 sensors have anything to do with it ?
Did you figure it out? I’m getting the same code
Your 02 sensors are probably fine, sorry for the delayed response... my widebody G35 apparently had the chain snap, out of every car with a chain my car was the one that got the bullet.
its most likely a timing issue, my engine had a bent valve due to the chain being snapped and setting the timing off.