Volkswagen Jetta P2272:  B2S2 O2 Sensor – Stuck Lean

P2272 in the Volkswagen Jetta 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

Volkswagen Jetta P2270: Symptoms, Causes, + Diagnosis

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

Volkswagen Jetta P0452:  FUEL Tank Pressure Low Diagnosis

P0452 is a generic OBD II code that can occur in the Volkswagen Jetta.  It means that your Jetta’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

Volkswagen Jetta P2181: Symptoms, Causes & Diagnosis

P2181 indicates that your Volkswagen Jetta has an observed cooling system temperature that is too high or too low. It will come up in the scan tool as “Cooling System Performance”. The trouble with P2181 is that by itself, it’s not narrowing much down.  There could be a problem with your Jetta’s cooling system, temperature … Read more

Volkswagen Jetta Overheating While Idle: Causes + Fix

There are a few reasons why your Volkswagen Jetta 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

Volkswagen Jetta:  P0068 MAP/MAF Throttle Position Correlation

P0068 in the Volkswagen Jetta 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 Jetta’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

Volkswagen Jetta: Engine Smoking Causes + Diagnosis

A smoking engine is a serious thing.  If your Volkswagen Jetta’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 Jetta’s engine would smoke include overheating, burning oil, or … Read more