hi guys, i know this has been posted so many time just wondering how to fix this issue error code 4 on p28, i am using obd0 harness, and obd2b dizzy from b18c7 2000 teg type r
do i have to bypass it, seems i cant find the answer to this , provide me with link if there is .. thank you

 

verify your wring from ECU to distributor.
Do electrical continuity checks.
Also check inside the distributor and check that all wires are in good condition.
Other than that, try a different distributor.

 

^^

And buy a multimeter.

 

yeh, i am checking right now... i am so confuse with ckp cyp tdc, where it suppose to go..
because i am using ebay obd2b dizzy conversion to obd0 ,, obd0 engine harness,, obd1 p28 ecu with obd1 to obd0 conversion ecu plug

 

your crank position sensor is in the dizzy
but just becasue you have a code 4 does not always mean that your sensor is bad

a 02 sensor that is not connected right will also throw a code 4
that p28 ecu you have will be looking for a 4 wire o2 sensor
so make sure you have that hooked up with your jumper harness

hope that helped

 

I had a code 4 after a b18c swap to my 93 civic vx. After searching for 2 months, I had swapped distributors and ecu. Checked continuity on the distributor harness to shock tower, then shock tower to ecu. Changed my o2 sensor and even changed the pigtails to my ecu. I crossed this post and decided to explore it more and it was the lead to my solution. Vx harness repinning maybe be wrong by some of the diagrams provided on the interweb. From converting the o2 sensor and adding a knock sensor. One of the wires is identical to the cps wire and can easily be confused because they are literally righ next to each other. Make sure your pin out is correct. To the future person looking for this solution you’re welcome.