| I am getting a code 42(fuel temp sensor) and code 53(passenger side 02). I swapped out another fuel temp sensor, but the code remains. I swapped out another 02 sensor, but the code remains, but I haven't really driven it for a long period to delete the code, however I think it is being caused by the rich condition. PTU was swapped with another, no changes. Plugs are new and the correct NGK ones. The connector on the back of the ECU is tightened properly. I have removed and reseated it twice. I haven't tried a new engine temp sensor, but I sure can swap one out and see what happens. Thanks for the response.

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