Trouble Codes

Pontiac GTO P0420: Meaning, Causes, + How to Fix

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This page is meant to help you troubleshoot the Pontiac GTO P0420 trouble code. It covers the P0420 code’s meaning, symptoms, causes, and possible solutions. P0420 is the most common OBDII code and is virtually never a breakdown risk. A failing oxygen sensor or bad catalytic converter are the most common causes of P0420. Table … Read more

Pontiac Grand Am P0420: Meaning, Causes, + How to Fix

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This page is meant to help you troubleshoot the Pontiac Grand Am P0420 trouble code. It covers the P0420 code’s meaning, symptoms, causes, and possible solutions. P0420 is the most common OBDII code and is virtually never a breakdown risk. A failing oxygen sensor or bad catalytic converter are the most common causes of P0420. … Read more

Pontiac G8 P0420: Meaning, Causes, + How to Fix

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This page is meant to help you troubleshoot the Pontiac G8 P0420 trouble code. It covers the P0420 code’s meaning, symptoms, causes, and possible solutions. P0420 is the most common OBDII code and is virtually never a breakdown risk. A failing oxygen sensor or bad catalytic converter are the most common causes of P0420. Table … Read more

Pontiac G6 P0420: Meaning, Causes, + How to Fix

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This page is meant to help you troubleshoot the Pontiac G6 P0420 trouble code. It covers the P0420 code’s meaning, symptoms, causes, and possible solutions. P0420 is the most common OBDII code and is virtually never a breakdown risk. A failing oxygen sensor or bad catalytic converter are the most common causes of P0420. Table … Read more

Pontiac G5 P0420: Meaning, Causes, + How to Fix

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This page is meant to help you troubleshoot the Pontiac G5 P0420 trouble code. It covers the P0420 code’s meaning, symptoms, causes, and possible solutions. P0420 is the most common OBDII code and is virtually never a breakdown risk. A failing oxygen sensor or bad catalytic converter are the most common causes of P0420. Table … Read more

Pontiac G8 P0171: Causes, Diagnosis, + How to Fix

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One of the most common trouble codes with the Pontiac G8 is P0171. It indicates that your Pontiac G8 is running lean on the bank one side.  It’s the most common air/fuel mixture-related code. It’s not the most complicated OBDII trouble code to diagnose. It is also one of the most common codes. The most … Read more

Pontiac G6 P0171: Causes, Diagnosis, + How to Fix

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One of the most common trouble codes with the Pontiac G6 is P0171. It indicates that your Pontiac G6 is running lean on the bank one side.  It’s the most common air/fuel mixture-related code. It’s not the most complicated OBDII trouble code to diagnose. It is also one of the most common codes. The most … Read more

Pontiac G5 P0171: Causes, Diagnosis, + How to Fix

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One of the most common trouble codes with the Pontiac G5 is P0171. It indicates that your Pontiac G5 is running lean on the bank one side.  It’s the most common air/fuel mixture-related code. It’s not the most complicated OBDII trouble code to diagnose. It is also one of the most common codes. The most … Read more