Make certain the wiring is in good condition and has proper voltage and ground to the sensor before replacing the sensor. Is it a stepper motor that drives the throttle body then?. And to you find them easier to get out warm or cold? Now don't ask yourself; What should you do with P0030 code? To try and fix the problem a shop replaced the valve that controls the airflow into the engine. It helped for a while but did not eliminate the problem. How serious is the P0030 code? The code is triggered when the sensor is taking too long to warm up. Then, connect your meter leads to both of the heater circuit pins on the sensor side of the connector. Is there a way to check if it is the wiring or actually the sensor that is bad? Water getting inside the heated oxygen sensor connector can caused the heated oxygen sensor fuse to blow, which is a very common problem for this type codes.
Turned it off with the reader came back on in about 2 days. Enter the 5 character trouble codes in the search box and submit the search. What causes the P0030 code? Changed O2 sensor and still have problem and code. I can't see why subaru got rid of the cable operated throttle body, I haven't had a problem with one of those ever. The post will be deleted, this is not a review forum for specific shops. The idling is rough in the sense it revs too low and often drops so low that the engine cuts out. I have a Subaru Legacy 2004, automatic which has intermittent running problems when warm, while occasionally showing the check engine light.
Since the sensor is heated when the car is cold to reduce emissions, why would the symptoms only start when the car has reached operating temperature? Regardless of how you approach it, you should get this fixed right away. This is a subreddit for asking Mechanical questions pertaining to vehicles, engines, etc. This is a zero tolerance policy. If that isn't available, provide all you know and explain why. This code can only be caused by problems in O2 sensor heater circuit, or by the sensor itself. You can do this using a. I just recently bought a sensor that was dead out of the box.
And is the sensor indicated by the code the upstream, or front sensor? Hooked up the scanner and code shows P0030. The list of automotive Makes at the right edge of the screen. Just to double check, I tested the old sensor I had just removed, and it passed. If there is infinite resistance, repair the open in the circuit. Keep discussion friendly, civil, courteous, and professional. If not, the heating element inside the sensor has high resistance and the sensor should be replaced. Now don't ask yourself; What should you do with P0030 code? Those who demonstrate they cannot follow the rules will be warned and posts removed.
To test the ground side of the circuit, connect the red multimeter lead to the battery positive terminal and the black lead to ground. If either sensor isn't working correctly, the car will run rough and the engine will be less efficient. Many problems are created by the people who work on the vehicles. How does a mechanic diagnose the P0030 code? While not car-threatening, it's good to take care of this right away to improve gas mileage. This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. All posts without this information may be subject to being removed.
Need help with a P0030 code? We have a large number of resources to help you repair the problem. Select one of the options below to filter by 'Solved' or 'Unsolved' posts. Only give advice on something you believe to be true. In order to achieve the require temperature, a heater element is included inside the heated oxygen sensor. Beyond that, you are better off fixing the o2 sensor first yourself.
If not, you have a problem with the O2 sensor power supply. The code is triggered when the sensor is taking too long to warm up. I had to replace the sensor, reattach the wires correctly, reset code, then road test it with no issues noted. We allow links, pictures, video, or audio file to help diagnose your problem. In order to achieve the require temperature, a heater element is included inside the heated oxygen sensor. Below you will find the most complete list of Subaru trouble codes available.
I think there is a way to use an oscilloscope to see if it is swictching correctly. The most common place for that problem is the heater element inside the sensor. The solution is here : Subaru Legacy P0030 Possible Solution : Disconnected, dirty or fouled spark plugs are common causes for engines that won't start. If we feel a piece of advice is particularly reckless, dangerous, or extremely unhelpful it maybe removed If a post or comment is provided that is not a response to a question, the post may be removed. The connector may have a removable cover. Water getting inside the heated oxygen sensor connector can caused the heated oxygen sensor fuse to blow, which is a very common problem for this type codes. Spark plugs typically need to be replaced every season or 25 hours of use.
Look up your code definition. If there is a link to a specific diagnosis strategy for the code then follow that and start testing. If your registration is due, you will also fail the emissions test. You should also check that the spark plug gap is set properly. In later car models, the car's computer can usually keep the vehicle running, but the engine warning light on the dashboard goes on to warn the driver. Please read the on the subject for details. These are listed in numerical order for easy searching.