P066B OBD II Trouble Code Cylinder #1 Glow Plug Circuit High

How to easily diagnose, repair, and info on causes of a P066B trouble code that indicates a detected high voltage condition in the glow plug control circuit on cylinder 1.

Symptoms of P066B OBD II Trouble Code

Common Causes of P066B OBD II Trouble Code

Severity of P066B OBD II Trouble Code