About a week ago the exp threw a code for bank 1 sensor 1. Replaced sensor (what a pain), code gone, runs better than ever. Now yesterday I noticed a power loss, and this morning threw a code for bank 1 sensor 2.
The fact that these two popped up so close together makes me think there is an underlying issue causing the sensors to fail. I have some kind of top end knock on the passenger side (bank 1..coincidence?) that sounds like a lifter or maybe a sticking valve (only when hot). So I'm looking for any input about this. Should I replace sensor 2 and not worry about it or look further for an issue? First thing that came to mind was a bad injector, maybe unburnt fuel causing problems with the sensors. Tested injector resistance and they all came out exactly the same, also did the old screwdriver test and they all have a steady spray pattern.
So a couple questions
Bad cat?
Should I look into the engine noise? Maybe need to replace a coil?
Just replace sensor?
The fact that these two popped up so close together makes me think there is an underlying issue causing the sensors to fail. I have some kind of top end knock on the passenger side (bank 1..coincidence?) that sounds like a lifter or maybe a sticking valve (only when hot). So I'm looking for any input about this. Should I replace sensor 2 and not worry about it or look further for an issue? First thing that came to mind was a bad injector, maybe unburnt fuel causing problems with the sensors. Tested injector resistance and they all came out exactly the same, also did the old screwdriver test and they all have a steady spray pattern.
So a couple questions
Bad cat?
Should I look into the engine noise? Maybe need to replace a coil?
Just replace sensor?
