My car suddenly started bringing on the check engine light. I hooked up my OBD reader and it says Knock Sensor 2. I cleared the code and restarted it and it did it again. Where is the Knock Sensor 2?

 

The Knock Sensors are bolted into the intake side of the cylinder block just under the intake manifold. There are 2 sensors, one towards the timing belt side, and another toward the bell housing side. I don't know which one is sencor 1 or sencor 2.

 

Those sound like a pain to get to, maybe I should just replace both.

 

FCP sells a kit for $62 that includes the two sensors and the wire. You may want to check out some vids on Youtube for replacing the PCV system to see how to lift off the intake manifold (and you may want to consider checking/cleaning your PCV parts while in there...) I'm wondering if you can test the knock sensor via its wiring before assuming its bad vs the connector...