Code P0420?

The Diagnostic Trouble Code (DTC) P0420 in a 2006 Chevrolet Equinox indicates a potential issue with the efficiency of the catalytic converter in the exhaust system. This code points to the Bank 1 catalytic converter not performing its job of reducing emissions as effectively as it should.

The P0420 code can be caused by several factors, including:

Catalytic Converter Failure: The catalytic converter may be worn out or damaged, leading to reduced efficiency and increased emissions. This is a common cause of the P0420 code.

Here is a generic guide to help you step by step with instructions in the diagrams below to show you how on your car:

https://www.2carpros.com/articles/catalytic-converter-replacement

The catalytic converter you want to replace is the one on the right side of the engine. Check out the images (below). Please let us know if you need anything else to get the problem fixed.