Volvo 850 Problem Report
Volvo 850 Engine will not start, will not crank over and check engine light may be on
You may experience just a check engine light, but you may also have an engine that will not start (won't turn over) and erratic transmission shifting. A diagnostic check will turn up a 3-1-3 code in the transmission control module for the gear position sensor. Replacement of the sensor will be necessary to address this issue.