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1999 Forester S
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Discussion Starter #1
I have a swapped 99' Forester, and I just recently got a CEL.

Got the code pulled, and it came up as P1594, which is listed as being "AT Diagnosis Input Signal Circuit Malfunction".

Any insight on what exactly this means, and how I can fix it? It sounds like one of those "a plug came loose somewhere" situations, but I don't know where to begin looking.
 
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