P2646 is an OBD-II trouble code : CAUSES AND FIXES
P2646 is an OBD-II trouble code that indicates an issue with the “A” rocker arm actuator system, specifically on bank 1, and is either experiencing performance problems or is stuck in the off position. This code is often associated with variable valve timing systems (like Honda’s VTEC) and suggests a problem with the oil pressure or flow … Read more