Q: P430 & P420
I recently changed one of my ignition coil and they removed the exhaust plastic head to access the area. Now I'm getting codes P420 &P430. Could these code happened during the process? I read it could be a bad gasket in the plastic exhaust head? I have a long trip soon, can i use the car without causing damage until I come back from the trip?
My car has 138000 miles.
My car has an automatic transmission.
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