Possible Cause

NOTE:  The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.

DTC: P0327 

• Knock sensor 1 (bank 1) KSB1 line short to ground

DTC: P0328 

• Knock sensor 1 (bank 1) KSB1 line open
• Knock sensor 1 (bank 1) KSSGB1 line open

Common 

• Knock sensor 1 (bank 1) failure
• PCM internal circuit failure