Pontiac GTO P2195 Causes + Diagnosis

P2195 is a general OBD2 code that indicates that the signal coming from your Pontiac GTO’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 bad … Read more

Pontiac GTO P2272:  B2S2 O2 Sensor – Stuck Lean

P2272 in the Pontiac GTO 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 typically … Read more

Pontiac GTO P2270: Symptoms, Causes, + Diagnosis

P2270 is a general DTC trouble code, which means it has the same meaning for the Pontiac GTO 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 that … Read more

Pontiac GTO P0453: Fuel Tank Pressure Sensor/Switch Too High

Your Pontiac GTO 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 only … Read more

Pontiac GTO P0452:  FUEL Tank Pressure Low Diagnosis

P0452 is a generic OBD II code that can occur in the Pontiac GTO.  It means that your GTO’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 system is … Read more

P2189 Pontiac GTO:  Lean Condition at Idle (Bank 2)

P2189 is a DTC code that can occur in your Pontiac GTO.  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 speed. … Read more

Pontiac GTO:  SVC Tire Monitor

Your Pontiac GTO is equipped with a tire pressure monitor system.  This system notifies you if the tire pressure is too low.  When you get the Service Tire Monitor warning, it indicates that there is a problem with the tire monitoring system itself.  Id does not mean that the tire pressure is (necessarily) too low. … Read more

Pontiac GTO P2187:  Bank 1 A/F Mixture Too Lean”

P2187 is a DTC code that can occur in the Pontiac GTO.  It indicates the air fuel mixture is too lean at idle. The technical definition for P2187 “System Too Lean at Idle: Bank 1”.  The code is thrown after your GTO’s oxygen sensor on Bank 1 (usually sensor 1) has detected that the air … Read more

Pontiac GTO Overheating While Idle: Causes + Fix

There are a few reasons why your Pontiac GTO would be overheating when idling.  The most common ones include a bad thermostat, water pump, electric fans, and low coolant level.  This guide is intended to help you find the cause of this overheating in the most efficient way possible.  So, let’s start with what’s easy … Read more

Pontiac GTO:  P0068 MAP/MAF Throttle Position Correlation

P0068 in the Pontiac GTO is a generic OBD II code.  In layman’s terms, it means that the MAP (manifold absolute pressure) and/or MAF (mass airflow sensor) are providing the GTO’s computer contradicting data compared to what it should be in relation to the throttle position sensor. The throttle position sensor tells the computer how … Read more