As an autobox AAN, it might be lonely for its former companion, the Autobox ECU. Look at the Pin T55/51 and T55/54 info in this AAN ECU post. Also post a photo of the ECU showing the "X". "X" at the end of a Part Number often means rebuilt.
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this is copy / paste simptoms from SJM..
1111 (Blink Fault Code), 65535 VAG1551/2 Fault Code Number
Engine Control Unit (ECU) Defective memory circuits,
Incorrect Checksum for internal memory (EPROMs)
(this can occur on some modified ECU's) Check ECU ground connections, Check EPROM programming
Symptom: Check engine light may come on
we clean every contact again , and there is still light on.
same problem on stock and tuned chips.
engine run perfect.
what can I do to fix that?Leave a comment:
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AAN ECU 1111 fault code problem.
hello.
well I bought one AAN ECU (automatic gearbox) car was in mint condition if we look tehnical parts, evrithing was fine.
I put them in my car and find out that "check" light is always on. than I go get fault code it was 1111. after that I went to run the car and check light gone. until next start of engine. same procedure again.
car run perfect.
than I take the ECU out and put tuned chips in it. everithing is the same. I try this ECU on friends S6, and there is same problem
ECU have X on cover , and it mean that it have bridges for chips, they are not welded.
my old ECU don't have those bridges, but my electrical put them in , so now I can change chips .
can that make any difference?
can I fix somehow this check light?
Leave a comment: