P3469
Cylinder Deactivation Hydraulic Circuit Bank 1 High
What it means
The engine control module has detected an excessively high oil pressure or stuck-on signal in the bank 1 hydraulic circuit for cylinder deactivation. Either a stuck oil control valve, a blocked relief path, or a shorted pressure switch is reporting permanently high pressure.
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
Oil control valve stuck open
highOne of the most commonly reported causes for this code — check this first.
Pressure switch shorted
mediumA plausible cause — test and verify before replacing parts.
Blocked relief passage
lowLess common, but worth ruling out after the more likely causes.
Related help
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