I just bought a 2007 Nissan 350Z Grand Touring (34k) and after driving it for about 3 days the acceleration in the higher gears (4-6) have been lagging. Sometimes the lag is longer than at other times. However the lag comes and goes and is not always present. I plugged in my accessport to see if any codes popped up and Code PO332 Knock Sensor 1 Circuit Low Input (Bank 2) showed. I cleared the code and drove it for about 3 miles and the code popped up again. Is this simply a bad knock sensor or could it be a bad connection of the wiring connected to the knock sensor? I also read that the PCM/ECM could have a bad connection.

Please help, greatly appreciate it!

 

Driver side knock sensor could be faulty. Change it first and see what happens.

Buy an OEM one.