Hi! I have noticed that the shift lock on my recently bought Volvo does not work, not meaning that it won't let shift, on the contrary it lets me shift without the engine on. The shiftlock release button is not engaged so that shouldn't be the reason. What could be the problem? As another problem the Lambda warning light is constantly on. The cylinder-head gasket was replaced before I bought it. Does anyone know the reason behind this?

 

Someone might have bypassed the shift lock system.

You need to pull the codes and see what they are.