The P2646 fault code in automobiles refers to a problem with the 'A' Rocker Arm Actuator circuit. The most common symptom is the illumination of the Engine Light or Service Engine Soon Warning Light. The cause of this issue could be low or overfilled engine oil, incorrect engine oil type, faulty 'A' Rocker Arm Actuator, or a poor.. P2646, rocker arm actuator control system performance/stuck off.all fixes didn't work. 2008 honda element ~150K miles, no other issues or codes, change oil every 5k with specified weight. Current oil level is full and has about 500 miles usage. Check engine light comes on with VSA and exclamation point lights as well. Comes on when.
Definition Meaning and Fixes for a Honda P2646 engine Diagnostic Trouble Code: 'A' Rocker Arm Actuator System Performance / Stuck Off Bank 1 "Rocker Arm Oil.. P2647 - Rocker Arm Actuator Control System Stuck On; P2646 - Rocker Arm Actuator System Performance/Stuck Off Bank 1; These errors relate to the VTEC solenoid. This is a really interesting mechanism!. My 2004 Honda Element that I purchased in Feb 2020, started bucking and jerking 4 months after I purchased it. I had the oil changed with.