P3401 OBD II Trouble Code Cylinder 1 Deactivation/Intake Valve Control Circuit/Open

How to quickly diagnose and repair, and causes of a P3401 electrical code which indicates an open state in cylinder 1 deactivation or intake valve control circuit.

Symptoms of P3401 OBD II Trouble Code

Common Causes of P3401 OBD II Trouble Code

Severity of P3401 OBD II Trouble Code