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It is not a sensor as those are all P0 codes... this is a P1 manufacturer specific code. I have an OBD II reader tool that I use to clear the code, but it comes back in less than a second, so disconnecting the battery will not help. Does anyone have manual on the Leganza that lists P1 Diagnostic Tro...

California Smog check, my 1999 Daewoo Leganza passes all emissions tests, but cannot be certified because it has a check engine light with a P1780 code. I reset it and it comes right back. P1 is powertrain, manufacture specific, and 7 is Transmission, but I need a reference for 80. Forget the Dealer...