Error Code p2646

you replaced the solenoid but the code refers to the actuator A bank 1--performance problem or actuator stuck off====causes wiring---rocker arm actuator
have it professionally checked and if faulty replaced , then the code will be cancelled

code p 2646 refers to rocker arm actuator A bank 1---performance problem or actuator stuck off=== causes wiring--- rocker arm actuator
discuss the problem with a service dealer shop or an accredited service shop that has experience on your make of vehicle
with rocker arm problems , to stop rotation it may be bottoming out on a valve spring and not letting the cam shaft turn .
talk with a shop for a proper diagnosis and quote

Not familiar with this particlar vehicle, bt the oil pressure switch is generally located below the heads, where the oil passage is parallel to the cylinder head.

honda accord code p2646=

rocker arm actuatar system performance or stuck off

p2647 is rocker arm actuator A- bank 1 stuck on--- to fix it should be the VTEC oil pressure switch. That switch will be on the cylinder head. Towards the windshield and passenger's side (I think).

Go to www . hondapartsdeals . com {remove the spaces when typing}

Go to parts, enter your car's info. System: Engine Component Vtec Oil control valve. That diagram should help a lot.

Good Luck.

sounds like the timing belt jumped

the actuator is faulty and you could clean it, reset ECU error and check again

I believe it has to do with the vtec functioning. At certain time in accleration during rpm range the valve timing changes and it is probably a sensor that detects rpms. you need to check with someone else though because I am not an expert on hondas, just understand the principle of how it works.