I have an h22a engine and I am getting codes 12 and 21. I know why I am getting 12 but why 21? VTEC seems to be working perfect.

Code 21 = VTEC Solenoid Valve defective circuit or unplugged / defective solenoid valve
* invalid code for non-VTEC engine
** invalid for V6 engine


Modified by SeaQuake at 6:30 AM 9/14/2003

 

check solenoid screen and try to clean it out

 

Do you know where that is located? Thanks in advance.

 

Anyone know how to check the vtec selenoid screen and clean it out? Vtec is working fine but I'm just worring about code 21.

 

why dont you pick up a haynes repair manual

 

I've have a helms manual for the 92-95 eg but no manual for the h22a at this time. I just wanted to know how to do it and if it is easy. I probably will pick-up a haynes manual sometime soon.

 

VTEC solenoids and screens are the same. Just remove it from the engine, and clean the screen using carb/brake cleaner then put it back on.