The oxygen sensor is integral for the better efficiency of your vehicle. Therefore, it must work perfectly at all times to do its job. If it fails, it is your responsibility to find out the issue and fix it immediately. Thankfully, the ECM is there to aid you by showing the right error codes. Here we will talk about the error code ‘P0030’ and its other siblings. The codes P0031 P0032 P0037 and P0038 belong to the same family and show errors with the oxygen sensor in your Subaru. Our guys over at our Performance Shop in Charleston can help you out, if you have any further questions, regarding the error codes.   

Heats the oxygen sensor to operating temperature before the engine reaches optimal temperature. 

What Does the Error Code P0030 Mean? Performance Shop

The error code P0030 is for the Front O2 Sensor Heater Control Circuit. It might sound complicated, but it is not as such. To clarify, we must talk more about the O2 sensor and how it works in a Subaru. The O2 sensor works best at its optimal temperature, but when the engine is cold you can’t heat it up quickly enough. To work around that, the sensor has its own heating system that gets to work as soon as you turn the switch. This allows the O2 sensor to heat up properly before the engine rises in temperature and takes over. The error code P0030 shows a malfunction in this system and it does so with the prompt illumination of the check engine light. So, either the O2 sensor has fried, it has a blown fuse, or there is some problem with the wiring. 

You can only know for sure once you visit a mechanical workshop like our Performance Shop in Charleston, Collins Automotive & Performance.     

Other Similar Codes 

The P0030 error code is general in nature, meaning it covers all the problems related to the heater control circuit. But the ECM can detect if the heating system is working over time (shown as P0032) or below par (shown as P0031). Moreover, you have the codes P0037 and P0038 that show the same problem but with the rear O2 sensor. 

Troubleshooting Tips 

The O2 sensors in most vehicles are easily reachable. That’s a bonus since you can test the components yourself and ensure their integrity. The first thing you should do is clean the sensor using an ethanol solution. That’s because the constant blow-up of dust can reduce the efficiency of the sensors in your car. A simple cleaning can help solve the problem. However, if that doesn’t work, you can replace the sensors completely. They do not cost too much and are easily available in the market. If installing a new O2 sensor doesn’t do anything for the error code, then you should get the wiring checked by a professional.   

How We Can Help?  

Our Performance Shop in Charleston specializes in all kinds of Subaru-related repairs and maintenance. So, if you get such error codes and you don’t know how to get rid of them, come on over to our workshop and let professionals look at the issue. 

Our trained staff is not one to disappoint, so you can rest assured that you will get the best service on every visit!