Hi,i've a b16a2 with a jdm p30 ecu.two codes are flashing the first one is like this .............. .............. .......(two long flashes and a 1 short flash)i think it is code 21,vtec solenoid switch.The 2nd one is like this ....... ....... .......(3 short flashes),error code 3,map sensor.I replace the map sensor,it still flashes 3,i also reset the ecu but in vain.Please help me out?

 

i just had the same problem and my TPS was loose.... take a peek at it.

 

i check the wiring,can't find any breaks or loose parts.i replug the map sensor,and it has no check engine light till today.it is a bit strange.

 

have u tested your vtec solenoid? i mean hot wire it to see if it is functioning?
and jdm p30 ecu is always a pain in the butt..i have the same engine and used to have a jdm p30 ecu and always gave me the knck sensor cel and traction control which we dont have here in states...so i go with a chipped p28 ecu chipped by a pro..anyways..hot wire the vtec solenoid and lmk..