I have 1996 honda accord 2.2 non vtec and a check engine light and it says p1381 cyp sensor intermittent. I googled it and most posts piont to distributor, wiring and ecm. I checked the distributor with a ohm meter and I am getting 391 ohms i also check the plug that come from the ecm and im getting 4.83v on the yellow wire key on so i plugged it back in and checked it at the ecm and still 391 ohms. I think the wires are okay i didn't wiggle any thing tho. I also took the altenator into autozone and it tested good 14.3v and I'm seeing mixed info on forums some say the dizzy should be 0.8-1.5 ohms and others say 350-700 I also checked the ohms on the ecm and im getting 9.4ish ohms. I don't know what I am missing I don't wanna guess hopefully someone can help me out.

 

I had the exact issue about 7 years ago on my 96 Accord. It would stall almost right after starting and had the CYP code. I swapped the distributor and still had the same issue so I took it to a shop. The shop called me back saying the code meant I needed a new distributor LOL. I told them the distributor was new, so they looked at it some more and said the ECU must be bad. I didn't want to spend $800-$1200 for an ECU so I took the car back and found ECU on ebay for about $45. Swapped out the ECU and it solved my issue. I think there is a TSB about troubleshooting CYP code that explains how to properly test distributor and wiring to ECU to confirm if that is indeed your issue. Hope this helps.

 

Do you happen to have a link to the tsb troubleshooting guide?

 

Couldn't locate the TSB, but this link has images of the flowchart troubleshooting procedure that should help.

https://www.hondaaccordforum.com/for...tdc-ckp-52455/

 

Check the connectors going to and from the distributor as well as the connectors going down to the CKP/TDC sensors and PCM connections.
Sometimes it's a bad connection.
Sometimes it a thermal failure that only occurs when the engine gets warm.

 

Attached are images that show the flowchart troubleshooting. It sounds like you already tested the resistance at the distributor and the wiring to the ECU. Based on that I would roll the dice with a used ECU.

 

I tried to post a link that had some info on troubleshooting the CYP, but I think the link is not allowed by this site. Anyways, it sounds like you already tested the resistance on the distributor and the wiring back to the ECM. The resistance should be between 350-700 ohms. One more thing to verify is that you don't have continuity between the distributor CYP connector and ground and the same with the ECM terminals to ground. If everything checks out, it is likely the ECM needs to be replaced.

 

I went to the junkyard and pulled a used ecm and it fixed all my problems,good thing it was good lol. The only thing with the old ecm was continuity to ground with black c14 i believe i could be wrong but I figured it was the ground for the sensor and the yellow one was the hot. I tried to look at the current flow images but they were too small. I'll try to test the new ecm the Same way and post the differences if any. Thanks y'all...

 

Glad to hear the ECM swap fixed your issues!