This page is meant to help you troubleshoot the Subaru WRX P0420 trouble code. It covers the P0420 code’s meaning, symptoms, causes, and possible solutions. P0420 is the most common OBDII code and is virtually never a breakdown risk. A failing oxygen sensor or bad catalytic converter are the most common causes of P0420. Table … Read more
One of the most common trouble codes with the Subaru WRX is P0174. It indicates that your Subaru WRX is running lean on the bank two side of the engine. P0174 and P0171 (fuel trim lean bank one) are the most frequently seen air/fuel mixture-related codes. If they appear together, it reduces the list of … Read more
If your Subaru WRX has the P0303 trouble code, you should know that it’s about as common of a code as there is. It’s a generic code (same meaning for all vehicles) that indicates that your car’s third cylinder is misfiring. P0303 is a real drivability concern and should be dealt with right away. If … Read more
P0341 is a somewhat common OBDII diagnostic code in the Subaru WRX. It means that there is a Range/Performance problem. In layman terms this means that there is a problem with the signal coming from the Camshaft Position Sensor (CPS). OBDII P0341 means that there is a problem with the Camshaft Position Sensor (CPS) … Read more
P0302 in the Subaru WRX is a common OBD II trouble code. It indicates that your car’s second cylinder has a misfire. P0302 is a real drivability concern and should be dealt with right away. If it’s bad enough to cause your WRX’s check engine light to come on, you shouldn’t drive your car at … Read more
P0175 is a common trouble code that can appear in the Subaru WRX. It’s generic, so it has the same meaning for your car as it would any other automobile. There are MANY issues that can cause P0175 in the WRX. If there are other codes present, use them to eliminate potential causes and save … Read more
P0141 is a very common OBDII code that occurs in the Subaru WRX. It is caused by a failure in one of the elements that heat the oxygen sensors, specifically bank 1 sensor 2, which is downstream from the catalytic converter. It technically stands for: The purpose of the heated element in the oxygen sensor … Read more
P0121 is a relatively common trouble code with the Subaru WRX. It’s an OBDII code and has to do with the Throttle Pedal Position Sensor. It is relatively serious problem since it can leave your vehicle in failsafe mode. OBDII code P0121 is a serious problem that requires serious attention. Diagnosing it can … Read more
If you own a Subaru WRX, you may have encountered the P0102 trouble code. This code indicates that the Mass Air Flow (MAF) circuit is low and not performing within its specified operating range. When this happens, your car may experience drivability issues such as stalling, lack of power, rough idle, and hesitation. There are … Read more
P0101 code in the Subaru WRX is crucial to maintaining your truck’s performance and ensuring it runs efficiently. This code indicates that there is a problem with your car’s Mass Air Flow (MAF) sensor, specifically, a Range/Performance issue. The most common cause of P0101 is a bad MAF sensor. When you encounter the P0101 code, … Read more