Your Audi’s oxygen sensor is also known as O2 sensor. This is an important part of the vehicle’s exhaust system. If you notice that your fuel efficiency is suffering, it may be a sign of oxygen sensor problems. It’s important to make sure the sensor is functioning properly in order to avoid major repairs later.
Vehicle repairs can be costly, but you can fix your Audi’s oxygen sensor problems without breaking the bank. First, it’s important to have your vehicle inspected and diagnosed by a professional. Fixing a faulty oxygen sensor quickly can end up saving you money in the long run.
The Oxygen Sensor and Your Audi
Your Audi’s O2 sensor is an electronic device that measures how much oxygen is being mixed with your fuel. Heated oxygen sensors, present in most newer vehicles, typically last for about 100,000 miles. It mixes air (oxygen) with your gas at the best ratio for your vehicle’s performance. It will also keep your car from having excess emissions.
If your oxygen sensor is not working properly, the vehicle’s computer doesn’t know how much oxygen to mix with the gasoline, causing an incorrect fuel ratio. This can decrease your Audi’s performance and even cause damage to your engine.
Signs that Your Oxygen Sensor May be Faulty
If the dreaded “check engine” light illuminates on your dashboard, it could mean a lot of things. Sometimes, it is indicating that your O2 sensor isn’t functioning properly. A professional specializing in Audis will be able to diagnose this problem easily, but here are some other signs that you need to watch for:
- stalling out or sputtering
- low or no power
- rough idle
- the car feels like it is lurching, even when holding the gas pedal steadily
- poor gas mileage
(Using leaded gasoline can significantly impact the life of your oxygen sensor. Always make sure that you use the correct type of gasoline to prevent damage.)
If your Audi experiences any of these symptoms, it’s important that you bring your Audi to a professional to have your oxygen sensor tested.
Does Your Audi Have a Bad Oxygen Sensor?
You should always bring your vehicle to a licensed mechanic specialized to work on your Audi if you suspect a problem with your O2 sensor. Your service technician will do a diagnostic scan and test your oxygen sensor using specialized tools:
An experienced Audi technician will:
- check all of the wiring around the sensor for damage and wear
- test the wires for connectivity
- start the vehicle and let the engine warm up
- use a backprobe and a voltmeter to test the sensor, without damaging any wires
Your Audi may have multiple oxygen sensors, depending on the model of the vehicle. Some cars have as many as four. Your service technician will test each sensor to determine which one is faulty.
Repairing Your Audi’s Oxygen Sensor
If your oxygen sensor is faulty, a licensed professional can easily fix the problem. They are usually fitted very tightly, so the technician will use a special socket to remove it. Trying to do this yourself may cause damage, so it’s best to leave it to the professionals.
Using aftermarket replacement parts may not be compatible with your Audi’s computer, causing the “check engine” light to remain on after the O2 sensor is replaced. This is another reason to allow a licensed Audi specialist fix your oxygen sensor problems.
Make Repairs Now to Avoid Costly Damage Later
A bad oxygen sensor can cause serious damage to your Audi’s engine. It can overheat your catalytic converter or increase your emissions, which is damaging to the environment.
Some benefits of having an Audi specialist replace your oxygen sensor:
- reduced fuel costs from poor fuel efficiency
- avoid expensive engine repairs later
- ensure your Audi is in compliance with emissions standards
- reduce travel expenses long-term
European Motor Works of San Francisco, CA for Your Audi
At European Motor Works, we will repair your Audi’s oxygen sensor problems without breaking the bank. We are a leading service center for European auto owners, and we understand the specifics for maximizing your Audi’s performance.
We have a tight network of connections for specialized parts and tools for keeping your Audi in tip-top shape year round. We’ve been a part of the San Francisco community for many years, and we look forward to earning your trust as your #1 choice for servicing your luxury import.