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Subaru
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2012
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Impreza F4-2.0L DOHC
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Repair and Diagnosis
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A L L Diagnostic Trouble Codes ( DTC )
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Testing and Inspection
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U Code Charts
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U0401
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LAN System (Diagnostics)
LAN System (Diagnostics)
DTC U0401 INVALID DATA RECEIVED FROM ECM/PCM "A"
DTC DETECTING CONDITION:
Defective data from ECM.
TROUBLE SYMPTOM:
Defective data on CAN communication occurs.
WIRING DIAGRAM: