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2010 Gmc Acadia Repeat P0420


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2010 Gmc Acadia Repeat P0420. Catalyst system efficiency below threshold. The hydrocarbon converted in the diesel oxidation catalyst is greater than 115 g.

2010 GMC Acadia Price, Photos, Reviews & Features
2010 GMC Acadia Price, Photos, Reviews & Features from www.newcars.com

I went to a nearby advance auto parts and their code reader came up with both the p0420 and p0430 codes. The hydrocarbon converted in the diesel oxidation catalyst is greater than 115 g. Check catalytic converter, o2 sensors, exhaust leaks.

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2010 GMC Acadia Price, Photos, Reviews & Features

The catalyst system is responsible for converting harmful gases in the exhaust into less harmful emissions before they are released into the atmosphere. This is my 2nd gm (1st was an 05 buick) with replacement aftermarket cats due to a code p0420. After i picked up the acadia from the transmission being swapped out, i drove about 10 miles and the check engine light came on. This article will therefore deal with code p0420 as it applies specifically to gm vehicles.

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