Standard
OBD-II / SAE J2012
P264D is the diagnostic trouble code a scanner reads as "A Rocker Arm Actuator Position Sensor Circuit High Bank 1", in the powertrain system. Trouble codes name the symptom the car reported, not the part that failed — the same code can have several causes, and many codes read differently on different makes. This is a reference index, not repair advice; have the car diagnosed before replacing anything.