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Mazda
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2008
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Tribute 4WD L4-2.3L Hybrid
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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
U0401
U0401 - Invalid data received from ECM/PCM A and or transmission control module
Retrieve and follow DTC's from the PCM.