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Subaru
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2019
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WRX STI Limited
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Repair and Diagnosis
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External Pages
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Different variant/trim
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Section 7 (Engine Control System (Diagnostics) (Except For STI) (4 Of 4))
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Diagnostic Procedure with Diagnostic Trouble Code (DTC)
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DTC U0077: Lin Communication Bus "ECM/Pcm" Off
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Component Description
Component Description
WARNING:
This page is about a different variant/trim than selected.
LIN communication is used to send/receive data between ECM and battery sensor.