Conditions for Setting the DTC
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2018 GMC Yukon XL, 2018 GMC Yukon, 2018 Chevrolet Tahoe, 2018 Chevrolet Suburban, and 2018 Cadillac Escalade ESV. However, it is still accessible from the selected car via links, so may be relevant.
P0324
Knock Sensor Signal = Excessive engine knocking
P0325, P0330
Signal circuit = Open - For greater than 5 s
P0326, P0331
Signal Performance = Low Frequency
P0327, P0332
Signal circuit = Short to Ground - For greater than 5 s
P0328, P0333
Signal circuit = Short to Voltage - For greater than 5 s
P06B6, P06B7
A fault of the processor that evaluates the knock sensor signal was detected.