I bought a 1999 V70 wagon in May and I love the car. The day I bought the car everything seem to work but since having it my windows on the passenger side have stop working, the radio went out, my speed and dashboard goes in and out and my check engine light is on. I went to a volvo mechanic and they change the speed sensors, clean the throttle, fuel injection flush, change the spark plugs, flush the transmission and changed the O2 sensor but the check engine light just came back on and it didnt pass emission yesterday, came back with a PO600 code, what do I do?

 

A PO600 code is a communication fault code. Do your anti-lock brakes still work? It might be that the abs module is broken. "P" codes usually are not translated to Volvo codes without some misinterpretations. Glad to hear you like your Volvo and hope you can get to the bottom of this very soon