troyw

I purchased a certified used 2006 A4 several months ago and have already taken the car back to the shop for repair work. Currently, I am having two O2 senors and a throttle body replaced. The service advisor told me that my car is showing two more error codes but they won't find out what those are until they fix the first two problems.

Has anyone else experienced any of these problems? My service advisor told me that they never have to replace O2 sensors on cars with lower mileage (mine has 30K). Could I be doing something wrong?

jayulzvern

I have no idea how you would hurt an 02 sensor, I killed my battery some how not to the point of having a noticeable change in the start time or starter motor but the computer said so and they did it. I bet they didnt even plug in a volt meter.

mechanics are getting lazy, plug in the OBD2 and do what it says that's all, wont think or try to figure out like mechanics used to.

shawfm

You could have had bad gas that poisoned the O2 sensor. Such as lead in the gas or other metal contaminants that did not burn off the sensor.
As far as the throttle body they can fail, I had one fail previously but not on my current car.