Code result
P3451
Cylinder 7 Deactivation/Intake Valve Control Circuit High
Moderate severity
What it means
The engine control module has detected a high-side voltage fault (short to power) on the cylinder 7 deactivation or intake valve solenoid circuit. Cylinder deactivation is disabled while the fault is present.
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
Wiring shorted to power
highOne of the most commonly reported causes for this code — check this first.
Solenoid internal short
mediumA plausible cause — test and verify before replacing parts.
Connector pins corroded - high contact resistance
lowLess common, but worth ruling out after the more likely causes.
Related help
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