Subaru WRX P0108:  MAP Barometric Sensor → High Input 

  P0108 is a generic OBD-II trouble code.  It indicates your Subaru WRX’s MAP (manifold absolute pressure) sensor’s voltage reading is outside of the normal operating range.  The voltage is too high.  It’s most commonly caused by a bad MAP sensor, wiring issue, or vacuum leak. The MAP sensor measures the air pressure coming into … Read more

Subaru WRX P0443 Code: Meaning, Causes, How To Fix

P0443 is a very common OBD2 code.  It’s generic, meaning it has the same definition for the Subaru WRX as any other vehicle.   If your WRX has this code, it indicates the EVAP purge control valve circuit is malfunctioning. This is typically caused by a short in the wiring to or from the purge … Read more

Subaru WRX: P0562 – System Voltage Low

P0562 is a common OBD-II trouble code.  It’s a general code, which means that it means the same thing for any vehicle, including the Subaru WRX.  P0562 indicates that the system voltage is below 10 volts for a solid minute.  With the engine running, the system voltage should be 14.1-14.4 volts, and it’s typically caused … Read more

Subaru WRX:  Signs of a Bad Water Pump

Your Subaru WRX’s water pump is one of the most crucial parts of the engine.  If it doesn’t pump water through the engine, it’s going to overheat and do a lot of damage.  Typical signs of a bad water pump include overheating, white smoke, a bad smell, rough idle, and more. A water pump works … Read more

Subaru WRX: Running Hot → Causes

If your Subaru WRX is running hot, it is a serious problem.  If it gets too hot, it leads to overheating.  A hot engine is usually caused by a few different things, such as the thermostat, water pump, radiator, or outside conditions.     Subaru WRX Running Hot Symptoms Obviously, the main symptom of running … Read more

Subaru WRX Rod Knocking Diagnosis

A rod knock is a very serious problem.  If your Subaru WRX has a knocking rod, it’s almost always going to be caused by a failure of the rod bearing or the rod caps (leading to a spun bearing) or lack of oil.   If you do have a rod knock, don’t ignore it for … Read more

Subaru WRX: Bad Torque Converter → Symptoms + Diagnosis

Your Subaru WRX’s torque converter is responsible for converting the energy generated by the engine at the flywheel and transferring it to the transmission, creating a bridge between the engine and the transmission.   In the Subaru WRX, a bad torque converter is often caused by bad transmission fluid, worn clutches, bad seals, or loose … Read more

Subaru WRX Battery Light: Why It’s On and How to Fix

If your Subaru WRX’s battery light is on, it is trying to warn you that there is an issue with the charging system. The charging system itself is relatively simple.  The battery light comes on because the voltage level at the battery is too low. Quick Facts Common Causes Faulty Battery, Bad Alternator, Battery Cables, … Read more

Subaru WRX Power Steering Fluid Leak: Causes and Solutions

One of the most common problems that can happen with a vehicle over time is it’ll begin leaking power steering fluid. Without the power steering system, your WRX would be very difficult to drive.  Most of the weight of the vehicle is absorbed by the power steering system, making it feel much lighter than it really … Read more