Error code
Dodge All models code P0420
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Meaning
Catalyst efficiency below threshold, Bank 1. Under 100,000 miles: failed upstream O2 sensor. Past 150,000 miles: converter at end of life. Running with misfire codes: misfires have damaged the substrate. Confirm O2 sensor function before replacing converter
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Address of this page: https://www.remfixit.com/tr/dodge/tum-modeller/p0420