Volvo C70 This sporty coupe has a three-piece retractable hardtop for unsurpassed fun whether the the top is up or down.

Problem with my 1999 C70 2.4L

Old 07-12-2017, 05:04 PM
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Default Problem with my 1999 C70 2.4L

Hello all!
I just recently purchased a 1999 Volvo C70 2.4L from a family friend. It's a beautiful car but I'm having some issues that are stumping me. Most importantly, I'm getting codes reading P1633 "vehicle speed sensor" and P0722 "output shaft speed sensor circuit no signal", which an employee at autozone told me are code for the same sensor. Problem is, they can't tell me exactly what sensor needs to be replaced, and there are several options on autozone's website that vary in price and look slightly different. Any guidance to which exact sensor this is, and helping me avoid a dealership diagnostic fee, would be much appreciated!

Also, possibly a related issue. The orange arrow representing "winter mode" is flashing when the car is on and in drive, and therefore is skipping 1st and 2nd gear and taking off from 3rd. Not sure if the sensor that is out could be related or if this is an issue all it's own. I tried resetting the transmission by shifting from park to "L" 12 times, but this did nothing. Any advice?
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