I was wondering if any one had an issue when changing the battery that the oxygen sensor monitor is not ready. I have tried the drive cycle multiple times and over 500 miles (thanks Volvo for making it easy). I still can't get my oxygen sensor monitors to activate for emission control. Does anyone have a idea of what to do or instructions that would make it easier to do the drive cycle? I am at my Whitts.

Any help would be extremely appreciated.

 

When you disconnect the battery all the drive cycle info is erased. After O2 sensors are tested (the heaters are tested on first startup) the system still tests the converter function. I used to follow a procedure very similar to the one linked from matthews volvo site. Important to make sure the engine is between ~80 and ~120 degrees before starting the test. The entire self test/drive cycle can be completed in about 18 minutes, have done many. I Used the expressway access road to complete them. It's important to not go too fast and keep a steady low rpm. The fuel tank can't be too full or empty either.

https://www.matthewsvolvosite.com/drive-cycle/

 

Thank you for your respond. I done it more then 5 times as drive cycles fallows descriptions how it supposed to be done. Always ended with 02 sensor not ready. I checked it with Multi system scanner1906 and all 4 O2 sensors work properly . Thank You!