syncopated

My check engine light went on, this is about 3 weeks after changing a bunch of parts because of some leaks. The code is P0327 Knock Sensor Bank 1 Circuit Low Input. I thought it was connect to the cruise control however, the other day it went on when the cruise control wasn't engaged. Also, it did pop off after a few days, but now it's back again. This is a 2011 3.2L with about 115K miles.

Does anyone know where this sensor is located and if I should really be concerned?

Did anyone have this replaced, how much does it cost?

Thank you.

Bob Petruska

It could be a bad knock sensor, need to retorque the bolt (the correct torque (20Nm) is very important for correct knock sensor function), or other problems(connectors, wiring, ECU, etc.).
I would retorque the bolt first, unfortunately it look like a somewhat difficult effort just to get to the bolt, and/or replacing the knock sensor.