Code result
P3401
Cylinder 1 Deactivation/Intake Valve Control Circuit Open
Moderate severity
What it means
The engine control module has detected an open circuit at the cylinder 1 deactivation or intake valve control solenoid. Without a valid circuit, cylinder 1 cannot be deactivated.
Is it safe to drive?
Use caution
The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical.
Most likely causes
Solenoid coil open
highOne of the most commonly reported causes for this code — check this first.
Wiring or connector open
mediumA plausible cause — test and verify before replacing parts.
Pin pushed back out of connector body
lowLess common, but worth ruling out after the more likely causes.
Related help
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