Re: Elderly man needs help NOW HAVE THE CODE

It reads PO 420 THANKS ALL YOU GUYS

Reply to
FRANK THURSTON
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Does this help?

A DTC P0420 means Catalyst system efficiency below threshold

Possible causes,

Use of unleaded fuel Oil contamination Cylinder misfiring Damaged H02S Damaged ECT sensor Downstream HO2S wires improperly connected Fuel pressure too high Damaged exhaust system pipe Damaged exhuast manifold Damged muffler/tailpipe assembly Damaged catalytic converter

Reply to
Childfree Scott

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