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Readiness OBD codes on Volvo s90 are reset by doing a driving sequence @ specific rpm & time with timed stops with car engaged in drive. 2 time w/start of car below 122 degrees. I want to lift rear axel and do this in a stationary position. Is this possible and will it reset codes. Driving sequence in urban area is almost impossible.
2 Replies
I've completed a lot of drive cycles on these models yet I've never tried it like you are proposing. My guess is you will struggle to achieve it this way. The only way I was able to do it was to use the Volvo scanner to manually run some of the tests, then drive on local freeways to do the rest. It is hard to do, especially on these 1997 models.
Same as the last, but i'll add it may also set traction control and or anti lock brake codes since just one set of wheels will not be turning. Part of the drive cycle is also looking for percent of load on the engine. vehicle must be driven through two (2) complete OBD drive cycles without any fault codes stored in order to clear the I/M Readiness Status.