Oxygen Sensor - Location and Part #

[KevinH1990]

I had a CEL again. I read the code and it is showing Bank 2 Sensor 1 as aging. Based on the date of my first post in this thread, it looks like 5 months since the last CEL. I cleared the code again and I will see how long it takes to return.

According the article Mike Focke linked, it appears that 100,000 miles is the average life expectancy of an O2 sensor. The car has 133,000 miles on the odometer and I've driven 103,000 of those miles. Even if the previous owner changed the sensors (which was not documented in the pile of receipts he gave me) all but one of my sensors has seen 100,000 miles of use.

I don't like to replace parts for the sake of replacing parts, but if the code returns in a few weeks, it may be time to start shopping for an O2 sensor.

[blue62]

Originally Posted by KevinH1990

I had a CEL again. I read the code and it is showing Bank 2 Sensor 1 as aging. Based on the date of my first post in this thread, it looks like 5 months since the last CEL. I cleared the code again and I will see how long it takes to return.

According the article Mike Focke linked, it appears that 100,000 miles is the average life expectancy of an O2 sensor. The car has 133,000 miles on the odometer and I've driven 103,000 of those miles. Even if the previous owner changed the sensors (which was not documented in the pile of receipts he gave me) all but one of my sensors has seen 100,000 miles of use.

I don't like to replace parts for the sake of replacing parts, but if the code returns in a few weeks, it may be time to start shopping for an O2 sensor.

You can look at the response of your O2sensor signal with the graphing feature on your Durametric. Then you will know if the response time is slow or not.

Rather then trying to explain what to look for in the graph, I would suggest you go to youtube and look up "ScannerDanner." Then find his video on "Oxygen sensor slow response test". Then you will have a visual on what to look for in the test.
Yes I know youtube can be a joke but Paul Danner is very very good at what he does.

[mikefocke]

I had one of those aging CELs and bought a single Bosch part and had a muffler shop replace the sensor for about a half hour on a lift price. Most was waiting for a cool down so they could work on it.

Several months later, I decided to replace the matching one on the other side just because. I used another muffler shop, same experience. You don't need to do that. I did lots of things like that, think $1200 worth of tires 2 months before I sold it just because they were 5 years old.