If your Pontiac GTO has the P0303 trouble code, you should know that it’s about as common of a code as there is. It’s a generic code (same meaning for all vehicles) that indicates that your car’s third cylinder is misfiring. P0303 is a real drivability concern and should be dealt with right away. If … Read more
P0302 in the Pontiac GTO is a common OBD II trouble code. It indicates that your car’s second cylinder has a misfire. P0302 is a real drivability concern and should be dealt with right away. If it’s bad enough to cause your GTO’s check engine light to come on, you shouldn’t drive your car at … Read more
A very common issue with the Pontiac GTO is the P0449 code. This trouble code is a reference number that is given to you when you plug your GTO into a OBDII scanner. P0449 deals with the evaporative emissions control system. It often appears with, or is related other codes, such as P0420, P0446, and … Read more
P0301 is a fairly common trouble code with the Pontiac GTO. It’s an OBD2 code and indicates that your car’s first cylinder is misfiring. P0301 is certainly a cause for concern and should be considered a threat to the drivability of your GTO. Fixing P0301 should be considered a high priority. Unlike a lot of … Read more
P0300 is a generic OBDII code that can occur with the Pontiac GTO. This code indicates that your car’s engine is misfiring and can be a drivability threat. P0300 is often accompanied by cylinder-specific misfire codes (P030X, where the X indicates the cylinder number that is misfiring). If you have P0300 and a cylinder-specific misfire, … Read more
P0455 in the Pontiac GTO is a trouble code that indicates your truck has a LARGE evaporative emissions leak. With this code, you shouldn’t notice any symptoms besides perhaps a noticeable fuel smell. P0455 usually is not an immediate threat to the driveability of your GTO. But, whenever the check engine light is on, it’s … Read more
The P0440 code is a common trouble code that many Pontiac GTO owners may encounter. It indicates that there is an issue with the car’s Evaporative Emission Control (EVAP) system. Specifically, the EVAP system is malfunctioning. A variety of causes can trigger the P0440 code, with the most common one being a loose or damaged … Read more
One of the most common trouble codes with the Pontiac GTO is the P0496 code. This code number references a number that is given to you when you plug your GTO into an OBDII scanner. Pontiac GTO P0496 Symptoms P0496 code in the Pontiac GTO will often be accompanied by an erratic idle. The engine … Read more
One of the most common trouble codes with the Pontiac GTO is P0171. It indicates that your Pontiac GTO 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
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