OBD II Oxygen Sensor Code ??Which O2 Sensor is it??

[wynndi]

The ONLY thing that has ever tripped my '96's check engine light is the following code/diagnosis from my EZ-Link diagnostic:

Freeze Codes
P0145 O2 Sensor Circuit Slow Response ( Bank 1 Sensor 3 )


Does anyone know for certain which of the 3 O2 sensors this is?

I COULD disconnect one at a time and run the diagnostic, but 20 degrees laying on my brick driveway isn't happening anytime soon!

Oh! The code pops up only once every 500~800 miles, usually at speeds above 60 and is the same code # everytime.

Thanks and HAPPY NEW YEAR!

[Mr. Pockets]

I can't tell you offhand what that code means, but I can offer some advice:

1. Simply disconnecting the sensors one at a time may not be sufficient. On pre-ODB-II SVXs, the ECU has to notice a problem on more than one occasion before it tells you something's wrong. ODB-II SVXs may be similar.

2. Even if you do disconnect the sensors, you don't have ot lie on your driveway to do it. I can't speak for the third sensor, but the connectors for the two O2 sensors in my car can be reached in the engine bay.

3. We have a tech Q&A forum for posts like these. I'm not complaining, just suggesting that you might get a better response to a technical problem in that forum.

[wynndi]

Good points!

I have moved the post to the tech section.

Thanks!