P2338 Buick (Cylinder No.3) Above Knock Threshold

P2339 Buick (Cylinder No.4) Above Knock Threshold

OBD Code:
System:
Subsystem: 		 P2339 Buick – (ASE)
 Powertrain
 Ignition System or Engine Misfire

Trouble Code Description: (Cylinder No.4) Above Knock Threshold


Location:
Analysis:

Possible Causes:
 Cylinder 4
 

 

Tech description:

Buick Vehicle:Buick Regal – ?Buick Riviera – ?Buick LaCrosse – ?David Dunbar Buick – Buick Century – Buick LaCrosse – Buick LeSabre – Buick Lucerne – Buick Park Avenue – Buick Regal – Buick Verano – Buick Enclave – Buick Encore – Buick Rainier – Buick Rendezvous – Buick Terraza – Buick Riviera