PCM monitors the range of the input signal from the Knock Sensor. The PCM senses a short in knock sensor circuit or malfunction of sensor. If the average value of the knock signal is out of the threshold value during a standard duration, the PCM sets a P0331 DTC.
Item | Detecting Condition | Possible Cause |
DTC Strategy |
•
Signal short | 1. Poor connection 2. Short in harness 3. Knock sensor 4. PCM |
Enable Conditions |
•
Pressure in intake manifold is normal
•
Engine speed higher than 2200rpm | |
Threshold value |
•
Knock Filtered Value less than 5 or greater than 65 | |
Diagnosis Time |
•
Continuous | |
MIL On Condition |
•
NO MIL ON(DTC only) |
