Circuit Description

Knock Sensor (KS) is used to detect engine detonation. PCM will retard spark timing based on signals from KS module. The KS produces an AC signal voltage that is sent to the KS module. The amount of AC voltage produced is proportional to the amount of knock.

Conditions for setting this DTC are as follows:

• Engine speed is 2200-6375 RPM.
• TP sensor angle is greater than 5 percent.
• No presence of Codes: P0117, P0118, P0122, P0123.
• KS voltage is less than .19 volt or greater than 4.99 volt.