DTC Troubleshooting: P1320
DTC P1320: Super Knock
NOTE:
Before you troubleshoot, review the general troubleshooting information.
Make sure the spark plugs are genuine parts and have the correct part number for the vehicle. If the plugs are aftermarket's products or they do not have the correct part number, they may cause this DTC.

DTC Description
Confirmed DTC
Pending DTC
P1320 Super Knock
    

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.
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
IAT Sensor (1)
Signal
Current conditions
Values
Unit
Engine Speed
    
Vehicle Speed
    
ECT Sensor 1 Voltage
    
MAP Sensor (Hi Res)
    
REL TP Sensor
    
IAT Sensor (1)
    

?5.
Check for Pending or Confirmed DTCs with the HDS.
DTC Description
Confirmed DTC
Pending DTC
P1320 Super Knock
    

Is DTC P1320 indicated?

     
YES
     
     
     
     
NO
     
     
     
Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at 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.?