Knock Sensor 1 Circuit Malfunction

FAULT ID
P0325

TITLE
Knock Sensor 1 Circuit Malfunction

BACKGROUND
- The knock sensor converts the vibration of the cylinder block to a voltage and outputs it. If there is a malfunction of the knock sensor, the voltage output will not change.
- The engine control module checks whether the voltage changes.

RANGE OF CHECK
- Ignition switch: ON
- Excluding 60 seconds after the ignition switch is turned to ON or immediately after the engine starts.
- Engine speed is approx. 2,000 RPM or more.

SET CONDITIONS
- The changes in the knock sensor output voltage (knock sensor peak voltage at each 1/2 revolution of the crankshaft) is less than 0.06 V for 200 times in secession.

PROBABLE CAUSES
- Knock sensor failed.
- Open or shorted knock sensor circuit, or loose connector.
- Engine control module failed.