One problem related to check engine light on has been reported for the 2012 Volvo S60. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2012 Volvo S60 based on all problems reported for the 2012 S60.
2012 Volvo S60. Vehicle is at 64,114 miles. About a week ago, my check engine light came on and I noticed a high pitched whistle coming from the engine when driving. I took the car to the mechanic and he stated that a rubber diaphragm in the oil trap had ruptured causing the vehicle to go on full vacuum and in-take too much air and oil. In fact, it was taking in so much oil that the oil was nearly depleted. He stated that he has seen similar issues with Volvos in the past. Approximately 6 months ago, I took the vehicle into the dealer for an oil service. At that time, he stated that the engine's oil was almost depleted. I'm now beginning to suspect that the broken diaphragm is related to that issue as well. I've seen other complaints regarding depleted oil (and the lack of a driver notification due to a malfunctioning oil sensor). This could potentially be the root cause of the oil depletion in these other cases as well.