slammedvtec

hi guys

i just did a b18b swap into my 93 civic hatch. i had a few codes as usual il start by

telling you what im using. its a 96 b18b with a 93 b16a tranny im using the b16a

wiring harness which is obd-1 harness and a p28 computer with a b18b stock map.

now right now the only code that i can read is 41, which is o2 circut heater

malfunction. i just replaced the o2 sensor but this was before i even knew it was

throwing this code because before i had the vtec solinoid plug pluged in to my fan

to my temp sensor.


anyways i was told that the reason my car is throwing a code 41 is cause obd-2

has a front and rear o2 that was the reason. now first qestion is the 4 wire o2 is

that a heated o2? cause i was told it was not but it doesnt make sense to me.


second question my car once heated up and even after it been heated up for a

while will go into safe mode and doesn't not throw a readable code well not as far

as useing the old jumper wire method, now could that be because of the o2 code

or something totally different cause it will go into safe mode then the check engine

light will go off completely then it will come on again and run normal then it will go

into safe mode. and everytime in safe mode it idle surges a little bit and only revs

to 4k and seems like timing is pulled alot cause of the lack of power up to 4k.

i know this is alot but im trying to give the most amount that i know whats going

on and hopfully someone can help me

thank much
trevor

slammedvtec

rare problem to have im guessing? oh well im just gonna buy a hondata s-300 to solve all my problems thanks anyways i guess

slammedvtec

i ordered s-300 but it wont be here for 2 weeks and this is annoying.. anyone know some of the reasons the ECU might be going into safe mode.. and im almost positive this is safe mode, ive searched for a week now atleast to try and figure out the problem. Could the o2 heater cause the computer to go into safe mode or just for it to run in open loop? im really confused about this hole problem and if anyone has any idea's il try it.

trevor