Code result
P2645
A Rocker Arm Actuator Control Circuit / Open Bank 1
Moderate severity
What it means
The controller cannot drive the rocker arm switching actuator A on bank 1 (used in cylinder deactivation systems such as VTEC, AFM, MDS). The valve lift mode cannot be switched.
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
Open coil in oil control valve
highOne of the most commonly reported causes for this code — check this first.
Broken control wire
mediumA plausible cause — test and verify before replacing parts.
Related help
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