Worn or internally failing catalytic converter (Most Common).
CATALYTIC CONVERTER 2012 CHEVY EQUINOX HOW TO
Our P0420 guide can walk you through how to save money and diagnose this yourself. It’s important to look for other codes that could indicate the root cause of converter failure, such as misfires or an incorrect air-fuel ratio. The most common reason for check engine code P0420 is catalytic converter failure, but there are other potential causes for this code. The chart below shows the most likely repair and cost range for Equinoxs for all of the years that FIXD has data on. Most Likely Repair And Cost For Chevrolet Equinox P0420 By Year Code P0420 indicates that the catalytic converter is not functioning efficiently, therefore increasing the output of harmful pollutants by the vehicle. The function of the catalytic converter is to break down harmful pollutants that are created by your Chevrolet Equinox during the combustion cycle and convert them into less harmful gases. You can take your car into a shop, or save money by learning how to diagnose and fix your problem yourself with our P0420 guide. There are many variables that could cause this code. Diagnosis: The most common cause of Chevrolet Equinox P0420 is a bad catalytic converter, but it can be caused by anything from a faulty oxygen sensor to a rich or lean running condition, or misfires.Repair Urgency: Get this code fixed as soon as possible to avoid further damage to your emission system and possible engine damage.
Issue Severity: MODERATE – Extended driving with this code can cause internal engine damage.
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