BigIslandGil

In case anyone else runs into this I thought I'd mention it. Had the engine light P2099 coming on. Replaced both drivers side pre and post catalytic sensors with no resolution. Took dealer awhile to track it down. It ended up being a small crack in the Catalytic Converter which was releasing some exhaust. The sensors apparently picked this up and reported the P2099 light. They had to pressure test the exhaust and finally found the problem.