Home › Audi › 2014 › A6 Quattro TDI Premium Plus › Repair and Diagnosis › Engine Performance › Ignition System › 3.0L - Ignition/Glow Plug System - Engine Code: CPNB › 28 Ignition/Glow Plug System › Glow Plug System › Engine Speed Sensor -G28-, REMOVING AND INSTALLING › Tightening Specifications