KrazyMC

wandering wat is code 21,22,and 41. I believe 41 is primary o2 sensor. i dont know the others. help plzz

IHateJDM

vtec solenoid, vtec oil pressure switch, and o2 heater circuit (o2 sensor is code 1). What engine/ecu and year?

KrazyMC

b16 sir2 /ecu p30 / civic hatch eg

Jmunk

Sounds like the VTEC solenoid isn't wired up, same with the pressure switch.

IHateJDM

I'm guessing vtec is not wired correctly. You may have your solenoid and pressure switch backwards (i did it too the first time). The solenoid is the one wire plug (A4), pressure switch has a hot (D6), and ground (A26). O2 heater (A6) should be orange/white. Those pinouts may not be 100% right, that's how most all obd1 is wired, and a lot of obd2 shares the same pinouts for these. Someone please correct me if I'm wrong there. You may also be able to ground the pressure switch to the head. Some ecu's look for it, some don't and i'm not sure on the p30.