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09/08/2021 2:50 am
Topic starter
Good Morning,
I was driving on the highway when a P0420 code kicked on, nothing seemed wrong with the car itself.
I looked at the data, the O2 sensors were changing their voltage correctly when I was changing the engine speed.
I looked at the long term fuel trim on bank 1, and it was only off -4.7%.
Bank 2 was almost perfect, so I'm thinking the injectors on bank 1 just need some cleaning.
Spark plugs are new and so is the air filter.
Thoughts?
1 Answer
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09/08/2021 3:05 am
How many miles on the car?
Check for the leaks on the exhaust too.
