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Automotive, Diagnostic, Video

P0420 P0430 Catalyst System Efficiency Below Threshold – How To Diagnose & Fix – DIY

‘In this video I show how I easily tested if the catalytic converter was working using simple checks. If you have any of these faults codes logged I recommend using these step by step methods to diagnose & fix the fault.’ P0420 Trouble Code: Catalyst System Efficiency Below Threshold (Bank […]