Oxygen sensor switching problem
Thread Starter
|
New User
Joined: Oct 2003
Posts: 6
Likes: 0
From: MD
Oxygen sensor switching problem
My check engine light came on, so I took it to the dealer and the problem was diagnosed as my oxygen sensors not switching. They wanted to replace one of them, but I would rather do it myself, because I don't trust the dealership down here at school in Lexington VA and would like to save some money. I have a Haynes manual but it makes no mention of switching. Basically, do I test them both and replace one if I find it broken, or should I simply call the dealer to find out which one to replace? Also is there anything else I should know before I try to do this?
Double T
Double T
Posting Guru
Joined: Aug 2000
Posts: 1,984
Likes: 2
DoubleT, you need to get the code that the dealer scanned. It will tell which bank the sensor is on and whether it's upstream or downstream. If you can post the code, we'll tell you which sensor to replace. Hope they wrote down the code.......
Elder User
Joined: Aug 2002
Posts: 886
Likes: 0
From: Cincinnati
Dealer isn't moving things around
He is not switching sensors around. He was probably telling you they have a slow response. The computer is looking for the sensors to cycle and sets a code if they don't. Get the code read free to find which sensor it is if at all. You can save some money but you need good tools. Some of these don't to come out very easy. DON"T USE AN OPEN END WRENCH. You will only round the nut. A box wrench will fit over the sensor if you break the tab on the electrical connector. Hit the wrench with a good hammer.
Elder User
Joined: Aug 2002
Posts: 886
Likes: 0
From: Cincinnati
P0141 is downstream bank #1 heater failure. This is the passenger side O2 sensor after the converter. Could be a bad connection or a sensor that causes the heater in the sensor not to draw current.
