Pontiac G5 P0087:  Fuel Rail/System Pressure → Too Low

P0087 is a relatively common OBD II trouble code.  This code indicates that there is an issue with getting enough fuel pressure to the fuel rails.  It’s generic, which means that it has the same meaning for the Pontiac G5 as it would any other vehicle. This code is most common on vehicles that use … Read more

Pontiac G5 P0451: EVAP Pressure Sensor → Range/Performance

Like all OBD-II trouble codes, P0451 has the same meaning for all vehicles.  It means that your Pontiac G5‘s EVAP system has a pressure sensor that is malfunctioning in some way.  P0451 is usually caused by either a bad EVAP pressure sensor, a clogged fuel tank relief valve, EVAP lines, EVAP wiring, or a bad … Read more

Pontiac G5 P0204:  Injector Circuit Malfunction | Cylinder 4

P0204 is an OBD II trouble code.  It means that you have a fuel injector with a circuit malfunction, specifically the fourth cylinder in the firing order).  It’s generic code, which means that it means the same thing for the Pontiac G5 as it would for any other vehicle. When the PCM sees that the … Read more