AAN ECU 1111 fault code problem.

[prj]

even the stock chips which are OEM inside the ECU are wrong than. they show fault code 1111 too.
I was the first person who open ECU. we try to put in my car , friends car , and in both cases there are this fault code. than we try with tuned chips and there are no difference . same code , same problem in both cars.
this ECU is only ok in his stock OEM car. everithing is fine there.
very strange !

First of all, make sure the code is really what you think it is.
Maybe use a real scanner and not blink codes.

And it is very possible both chips can have problems as well.
Fit ones that 100% work or verify checksum.

Nothing strange here at all.

[Angus Young]

Those chips we installed didnt show any errors on other ecu!
Somehow I have a feeling that is happening cause that ecu was from a car that had automatic gearbox... we just dont no what to do 2 fix it! I would leave it like this cause car works great but the problem is it doesnt wanna show any errors on check engine, just 1111... we have tried to cause it to show other error but check doesnt respond.

[prj]

Those chips we installed didnt show any errors on other ecu!

Then the error is most likely not what you think it is. Scan the car with a proper scan tool.