i have a 1994 obd1 ls swap 5 speed bone stock in my 1994 civic hatch with a bone stock obd1 p75 , the car was coding for 43 (fuel supply) i replaced the o2 sensor code is gone but there is a new code 12 (EGR - exhaust gas recirculation lift valve ) but ls b18b1's dont have a egr valve and the ecu dosent look for one

 

ttt

 

thats strange can you post a vid of the blinking?

 

no need i know its 12 one long two short

 

You probably have an Auto ECU as the auto 92-93 Integras had an EGR valve



http://www.hondata.com/techecuid.html

All Honda ECUs have a part number which is located on the side of the ECU and inside the ECU on the connector. e.g. 37820-P72-A01

The part number consists of three components:

* Honda's part number for ECU, which is always 37820
* Three characters (which are loosely related to the model of car/engine). e.g P72
* Three characters (which are the revision of the ECU) e.g. A01 or G52

The middle three characters are the most useful to identify what the ECU is. Different generation ECUs may use the same characters. e.g. a P72 OBD I ECU is different from a P72 OBD II ECU. Here is a list of common ECUs:

The last 3 characters are broken down into 3 parts. "A" generally is used for US ECUs. "G" is European, and "J" is Japanese. There are other versions of this, but you get the idea. The second digit "0" typically means manual transmission, where a "5" means automatic transmission, and the last digit "1" is the version number.

 

no i dont like i said in my first post this code just came up after using the same ecu for months , also it would code for more things if it was a auto ecu

can i get some real help

 

They did yeah, but they used an OBD1 PR4 not a P75

Depends, if someone removed RP17 and RP18 and then replaced RP18 with a jumper wire you wouldn't get an AT codes. If it truly is throwing an EG-R code the ECU may be bad.

 

I was trying to help, its hard to tell you about a code that should never pop up but does. Good luck anyways

 

 

ok i have been running this setup for over year and had only one code 43 changed the o2 sensor 2 days ago and all the supped i have only code 12

 

Try a different ecu and see if it still comes up. I'm guessing its ecu related. Open the ecu up and see if you see anything burned.

 

tried 2 other ecu's