P2138 is a generic powertrain code that can affect your Pontiac Grand Prix’s “drive by wire” throttle system. It means that your Grand Prix’s “D” and “E” throttle position sensors do not agree with one another on how much far the throttle has been opened. They should have a similar voltage output. In this case, … Read more
P2196 is a generic diagnostic trouble code that indicates that your Pontiac Grand Prix’s first oxygen sensor on bank one is stuck rich. It does not necessarily mean that the vehicle itself is running too rich. This code is the opposite of code P2195, which indicates the oxygen sensor is stuck lean. P2196 Definition: Oxygen … Read more
P2135 is a generic powertrain code that can affect any make or model of vehicle that has a “drive by wire” throttle system (almost every vehicle made today). P2135 TPS Switch “A/B” Voltage Correlation If your Pontiac Grand Prix has P2135 it is considered “drive by wire”. Which means that it uses sensors and actuators to … Read more
P2197 is a general DTC code that indicates that the signal coming from your Pontiac Grand Prix’s first O2 sensor on the bank two side of the engine is stuck giving off a lean signal. The voltage reading from a normal oxygen sensor should look something like a heartbeat, whereas with P2197 the voltage looks like … Read more
P2195 is a general OBD2 code that indicates that the signal coming from your Pontiac Grand Prix’s 1’st O2 sensor on Bank 1 Sensor 1 is stuck lean. DTC P2195 is a general code, which means that it has the same meaning for any make, model, or year. It is most typically caused by a … Read more
P2272 in the Pontiac Grand Prix is a general diagnostic trouble code. It means that the “bank 2” downstream oxygen sensor (behind the catalytic converter) is continuously sending voltage that indicates a lean air/fuel mixture. This does not necessarily mean that the vehicle is running lean (although it can, but usually doesn’t). P2272 is … Read more
P2270 is a general DTC trouble code, which means it has the same meaning for the Pontiac Grand Prix as it would any other vehicle. It means that the oxygen sensor located on bank 1 behind the catalytic converter is continuously sending voltage that indicates a lean air/fuel mixture. This does not necessarily mean … Read more
Your Pontiac Grand Prix utilizes an evaporative emissions control (EVAP) system to migrate fuel vapors from the gas tank and fuel filler neck, and sends them to the engine to be burned off. When the pressure inside of the fuel tank is too high, P0453, is thrown and the check engine light comes on. If the … Read more
P0452 is a generic OBD II code that can occur in the Pontiac Grand Prix. It means that your Grand Prix’s EVAP system has detected low fuel tank pressure. The evaporative emissions control system (EVAP) sends fuel vapors from the fuel tank to the intake manifold to be burned off. When the pressure in the … Read more
P2189 is a DTC code that can occur in your Pontiac Grand Prix. It indicates the air fuel mixture is too lean at idle, specifically in bank 2 (we’ll cover how to find bank 2 later). Its is different from the much more common P0174, which indicates that bank 2 is lean at any engine … Read more