2003 Chevy Tahoe Code P0420

15 Feb 2023

Fix code p0420 on chevrolet cruze, chevy sonic catalyst system I`ve got an chevrolet tahoe 5,3 2001 mod with faulty codes p0134 and Nissan altima code p0420

Troubleshooting 1999 Chevy Tahoe P0420 Code & Emission Leaks

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Ive got a 2000 chevy tahoe throwing codes p0102, p0103, and p0118 allCode of p0141 was the problem?: check engine light came on and P0420 code: catalyst system efficiency below threshold (bank 1)Code of p0141 was the problem?: check engine light came on and.