I don't know if I posted this in the wrong section but I just got my 2001 VW Jetta 1.8T out of the shop for all new valves, head machined, and new timing belt. So I'm now getting this trouble code: DTC P0327 Knock Sensor Circuit Low Voltage . What I want to know is does this mean the sensor is bad or possibly timing issues? I did a search and pulled up posts with OTHER problem codes attached. I only have this problem code. All tips and suggestions I'd REALLY appreciate!