Possible Cause

Malfunction A

• Electric intake valve timing (IVT) control actuator (bank 1)
• Harness and connectors (Electric IVT control actuator (bank 1) motor control circuit is open or shorted.)
• Foreign matter caught at the electric IVT control actuator (bank 1)

Malfunction B

• Timing chain installation
• Intake camshaft sprocket (bank 1) wear