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PAR on Cars
P0420 Code on Chevy Trax 1.4L Turbo
There is a lot of advice on this issue but in my case it appears to be a cracked flex pipe. Hoping this helps others diagnose their issue before spending too much. This may end up not being a solution to your specific problem but will assist in ensuring you aren't missing this as an option. Note: we added the Trifecta Tune after the issue was ...
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