PNA - You are lucky. I did read that "bad gasoline" or a loose fuel cap can cause the P02098 code and check engine light to come on. However, in my crossfire, the tailpipes are filthy from the fuel burning lean and it smells bad on startup as opposed to what it used to smell like. The engine light went off at one point back when it first came on two months ago, but came back on shortly thereafter and has stayed on ever since. I reset the light once with a code reader, and it came back on within a few days. As per our owner's manual, I always put premium fuel in the tank. Every once in a while, I will also put in octane booster. Hopefully, the octane booster isn't causing any funny business.

I checked O2 sensor prices online: Bosch, NTK, Denso, Delphi, Walker and AirTex/Wells all make oxygen sensors for the Crossfire. AirTex/Wells looks to be the most expensive $387.00. The dealer Mopar part is $544. Does any one know if the AirTex/Wells are Mopar parts 5099820AA and 5099821AA? Dealer claims aftermarket parts may not clear CEL and DTC P02098. I intend on using the 02 sensors with OEM connectors, not the Universal fit ones.

Anyone have any wisdom on which sensor has the best track record (most reliable). Bosch appears to be the cheapest and AirTex/Wells and Denso the most expensive. Denso left down-stream after cat converter P/N 234-4884 lists at $526.99. OMG! Close to Mopar price $544...

I believe all 02 sensor manufacturers have a 12 month warranty.

Thanks!!!!