P0121 is a somewhat common trouble code with the Pontiac Bonneville. It’s an OBDII code and has to do with the Throttle Pedal Position Sensor. It is relatively serious problem since it leaves your vehicle in failsafe mode. P0121: Throttle Pedal Position Sensor → Switch (TPS) A Circuit Range → Performance Problem OBDII code P0121 … Read more
If your Pontiac Bonneville 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 Bonneville 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 Bonneville’s check engine light to come on, you shouldn’t drive your car at … Read more
A very common issue with the Pontiac Bonneville is the P0449 code. This trouble code is a reference number that is given to you when you plug your Bonneville 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 Bonneville. 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 Bonneville. 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 Bonneville. 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 Bonneville 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 Bonneville. But, whenever the check engine light is on, it’s … Read more
The P0440 code is a common trouble code that many Pontiac Bonneville 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
A prevalent issue with the Pontiac Bonneville is the P0446 code. This code corresponds to a specific number obtained when connecting your Bonneville to an OBDII scanner. A faulty vent control valve most commonly causes P0446. Definition P0446: EVAP System – Vent Control Circuit – Malfunction Symptoms Usually none Common Causes Bad EVAP Vent Control … Read more
One of the most common trouble codes with the Pontiac Bonneville is the P0496 code. This code number references a number that is given to you when you plug your Bonneville into an OBDII scanner. Related: P0420 Pontiac Bonneville Pontiac Bonneville P0496 Symptoms P0496 code in the Pontiac Bonneville will often be accompanied by an … Read more