The powertrain of the car engine is very problematic and that is why, the car engine P266A Code is appeared on the engine code reader screen for the test of the car engine. This code is connected with the some symptoms and problems. Some car manufacturers are touching to a mutable valve lift system that lets the valve to expose wider. Inner to the variable lift rocker arm meeting are location sensors so the engine computer (PCM) can monitor what the meeting is doing. If the sensor privileged the assembly fails, code P266A is set. A test drive is recommended when the car engine is fixed.