geekyjerry

like the title states I keep getting the P2646 code. I can't figure what is wrong. I have cleaned the screen for the VTEC solenoid. Didn't fix it. Oil levels are good and oil weight is correct. I am unsure on what to try anymore. Any help will be appreciated.



P.S I have searched this Forum and and no valid answers provided.

geekyjerry

Added information. It seems like it happens right before VTEC engages or slightly before. **Sometimes it will be fine**

windhund116

Maybe rocker arm oil pressure switch problems.

http://www.engine-codes.com/p2646_honda.html

Soviet

Any more information on the car? Are you running the stock ECU?

geekyjerry

I will check the switch.

The car is tuned on FlashPro.

Chuck S

At the link above describes this is related to the VTEC rocker arms and cams. Could be electrical or oil pressure related.

Who tuned your car? Where does VTEC engage? 10W-30 oil?

Reset the car to stock tune and VTEC engagement, reset the CEL, drive the car for a while and see if the code stays away.

-- Chuck

geekyjerry

The car was tuned by UMS in Phoenix.

The engine is built, and turbocharged with supporting mods. I believe VTEC engages at 43k rpm ~( I don't remember exactly)

geekyjerry

Additional information*

The pressure switch has an elbow on it or else it would rub on the turbo's hot side. I never had any issues until after the motor got built.

windhund116

Photo may help. Thanks!