What do I do here? I was driving and I heard a pop, car went into Failsafe and limited mode. Then than cleared and check engine light came on. I checked and code PO175 came up. I saw the result about rich bank 2. I have no idea how to attack and repair this. Can I get some advice please?
Thanks
Jack
1999 XK8

 

Just a rich code. I assume you have a code reader. I would clear it check engine light should go out, check air filter for starters and see if and when it comes back.
Could be many things, might be nothing. Plugs, coils, stuck injector for the moment, etc, etc, etc. I would also take note last time fuel filter was replace. If not sure, replace it. I have a scan gauge which reads temp, fuel miles, rpm, etc plugged in all the time. Codes pop often for me without any real direction. Hope helps a bit. Rich

 

Could be a problem with the Mass Air Flow (MAF) sensor. Try cleaning with MAF cleaner

 

If it recurs, think about checking the freeze frame data for clues.

Either way, look at fuel trims. Mainly to see if you're close to the other bank rich code. If so, i.e. both banks rich, you're looking for a common cause such as MAF. If not, you're looking for a one-bank cause.