code P264A - 'A' Rocker Arm Actuator Position Sensor Circuit Bank 1

REF..... code P264A - 'A' Rocker Arm Actuator Position Sensor Circuit Bank 1

I have a Toyota auris tr valvematic 2011 plate 64K on the clock… with the above fault code.......

Does NOT show up all the time, it’s very intermediate however it does seem to be more active once the engine is up and running and hot (normal running temp)

I'd really appreciate ANY advice ANYONE could tell me to point me in the right direction to fix this poxy problem.

I’ve done huge amount of homework on this issue sadly NO WHERE can i find a definitive explanation what the hell a * rocker arm actuator * is…..

Or images of the part that could be a fault, let alone the !Removed! location of it on the engine.

I’ve checked many things the car did have an Oil change over 90 days ago ( with the correct Oil )

However It making me think it’s something to do with the Oil its self after reading some sites….

Over filled / under filled / wrong Oil ?

I have removed 1L of Oil so the car has now…… half a filled sump….. On the dip stick.

I have remove both Camshaft Oil timing controls and cleaned them (they won’t dirty anyway)

I am now TOTALLY at a loss …….What the hell is making the car do this…. let alone what a * rocker arm actuator * is…..

Or its location of it on the engine so I could change it.

HELP !!!!!! 🙄😂😂