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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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U1201
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Instrumentation/Driver Info (Diagnostics)
Instrumentation/Driver Info (Diagnostics)
DTC U1201 CAN-HS COUNTER ABNORMAL
Detected when CAN data is abnormal.
NOTE:
Perform the diagnosis for LAN system.
Basic Diagnostic Procedure