Is there an oxygen sensor on a Volkswagen?
Volkswagens aren’t the only cars suffering from oxygen sensor issues. Audi, BMW, Mercedes-Benz, Porsche, Toyota, and Honda struggle to make oxygen sensors that last forever. Volkswagens are famous for ignition coils frequently failing in their four-cylinder 1.8 and 2.0T engines.
Can a check engine light be an oxygen sensor?
It seems as though the check engine light and O2 Sensor codes have always gone hand in hand. I can’t even begin to tell you how many perfectly good sensors I’ve seen replaced for a rich/lean code, or as a cure to a service engine light that comes and goes. Fact is, when oxygen sensors were first being used, they did tend to fail.
What makes the Check Engine light come on on a VW?
When reading the codes with an OBD2 scanner, you will get codes such as P0300, P0301, P0302. Volkswagen engine coolant temperature sensor can fail, triggering check engine light to come on.
Why is the O2 sensor on my car not working?
There are also some other possibilities such as an internally leaking EGR system, (but this will typically set a separate code). A leak in the exhaust system before the O2 sensor will also cause incorrect readings. And always check for after- market modifications. These can throw a wrench into the works!
What to do if your oxygen sensor is bad?
The Check Engine Light will illuminate if you have a bad or failing oxygen sensor. As soon as this light comes on, contact a professional automotive technician for a Check Engine Light inspection. This light can come on for many different reasons, so it is important to have it looked at by a professional who can correctly diagnose the exact cause.
What happens if your check engine light goes off?
It sends data to the vehicle’s computer, which uses it to regulate the mixture of air and fuel that enters the cylinders. An engine will keep running even if an O2 sensor needs to be replaced, but it will burn more fuel than usual. In the long run, a bad O2 sensor can damage components like the spark plugs and the catalytic converter.
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