Just as the title says. Code 21 and 43. Code 21 I know is the vtec solenoid, but the cars drives fine and vtec hits strong. I've reset it once before and the code pops up again.

As for the code 43, I know it's the fuel pressure but I have a adjustable fuel pressure regulator so that's probably y it's on? Not so sure on that though.

Other words car runs strong even though those codes are up. The engine light does not stay on during driving. Mayb it's the chip I got?

 

remove "chip" and see where did you get this chip from ?

 

The chip I ordered is from phearable. You think it's the chip?

 

i have a virgin ECU thowing code 43 and 22

code 22 turned out to be a leak at the Vtec mounting gasket.

as for the code 43 i have search ALOT and turns out the most common fix is a new Disty or 02 Sensor. i have also had 3 hondas with adjustable FPR's and Non of them ever had code 43.

 

Ok ill check on that

 

Also could a leak near the o2 cause a code 43? I have a aem wideband in place of the o2 sensot