When an o2 oxygen sensor go bad it ll cause your audi a3 s engine to run less efficiently.
Audi a3 door sensor problem.
Recent audi a3 questions 2009 audi a3 left tail lights no power car won t start when i try turning it on the red park light blinks as well as the park button.
Or it may exhibit none at all.
The door ajar warning staying on is usually caused by a bad door jamb switch.
Your a3 can exhibit symptoms when the oxygen sensor has gone bad.
If your early to mid 200 s audi or vw is gabbing problems with either side door electrical locks windows or anything electrical start by looking here.
Here are the most common symptoms when the door jamb switch has failed or the door ajar warning stays on.
How to repair door contact sensor.
This article applies to the audi a4 b7 b8.
Often enough the only sign of the problem at all is the service engine soon light being on.
This article applies to the audi a3 2012 present.
Audi a4 b7 b8 door lock problems diagnostic guide door lock problems diagnostic guide experiencing problems un locking your doors.
This can create some visibility.