DTC Troubleshooting: P0326
DTC P0326: Knock Sensor Malfunction
NOTE: Before you troubleshoot, review the general troubleshooting information.

DTC Description
Confirmed DTC
Pending DTC
P0326 Knock Sensor Malfunction
    

1.
Problem verification:

Problem verification
?1.
Record all the on-board snapshots with the HDS.

?2.
Turn the vehicle to the ON mode.

?3.
Clear the DTC with the HDS.


?4.
Turn the vehicle to the OFF (LOCK) mode.

?5.
Start the engine.

?6.
Hold the engine speed at 3,000 rpm without load (in neutral) until the radiator fan comes on, then let it idle.

?7.
Test-drive the vehicle for several minutes in the range of these recorded on-board snapshot parameters:
Engine Speed
Vehicle Speed
ECT Sensor 1
MAP Sensor (Hi Res)
REL TP Sensor
Signal
Current conditions
Values
Unit
Engine Speed
    
Vehicle Speed
    
ECT Sensor 1
    
MAP Sensor (Hi Res)
    
REL TP Sensor
    

?8.
Check for Pending or Confirmed DTCs with the HDS.
DTC Description
Confirmed DTC
Pending DTC
P0326 Knock Sensor Malfunction
    

Is DTC P0326 indicated?

     
YES
     
     
     
The failure is duplicated. Go to step 2.
     
NO
     
     
     
Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the knock sensor and the PCM. If the on-board snapshot of this DTC is recorded, try to reproduce the failure under the same conditions with the on-board snapshot.?
2.
Knock sensor installation check:

Knock sensor installation check
?1.
Turn the vehicle to the OFF (LOCK) mode.

?2.
Check that the knock sensor is installed correctly.

Is the knock sensor installed correctly?

     
YES
     
     
     
Installation is OK. Replace the knock sensor.?
     
NO
     
     
     
Installation is not correct, reinstall the knock sensor.?