P3464
Cylinder 8 Exhaust Valve Control Circuit High
What it means
The engine control module has detected a high voltage condition in the control circuit of the cylinder 8 exhaust valve deactivation solenoid. A short to voltage or open low-side path causes the driver to read above the expected range, disabling cylinder deactivation requests for cylinder 8.
Is it safe to drive?
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 or wiring shorted to power
highOne of the most commonly reported causes for this code — check this first.
Solenoid coil open
mediumA plausible cause — test and verify before replacing parts.
ECM driver failed
lowLess common, but worth ruling out after the more likely causes.
Related help
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