Saturn SC P2272:  B2S2 O2 Sensor – Stuck Lean

P2272 in the Saturn SC 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

Saturn SC P2270: Symptoms, Causes, + Diagnosis

P2270 is a general DTC trouble code, which means it has the same meaning for the Saturn SC 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

Saturn SC P0453: Fuel Tank Pressure Sensor/Switch Too High

Your Saturn SC 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

Saturn SC P0452:  FUEL Tank Pressure Low Diagnosis

P0452 is a generic OBD II code that can occur in the Saturn SC.  It means that your SC’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 Saturn SC:  Lean Condition at Idle (Bank 2)

P2189 is a DTC code that can occur in your Saturn SC.  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

Saturn SC:  SVC Tire Monitor

Your Saturn SC 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

Saturn SC P2187:  Bank 1 A/F Mixture Too Lean”

P2187 is a DTC code that can occur in the Saturn SC.  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 SC’s oxygen sensor on Bank 1 (usually sensor 1) has detected that the air … Read more

Saturn SC Overheating While Idle: Causes + Fix

There are a few reasons why your Saturn SC 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

Saturn SC:  P0068 MAP/MAF Throttle Position Correlation

P0068 in the Saturn SC 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 SC’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

Saturn SC: Engine Smoking Causes + Diagnosis

A smoking engine is a serious thing.  If your Saturn SC’s engine has smoke coming from it, it needs to be addressed right away.  It can be caused by quite a few different problems, none of which should be ignored. The most common reasons why your SC’s engine would smoke include overheating, burning oil, or … Read more