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Mitsubishi
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1998
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3000GT V6-3.0L SOHC
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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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Diagnostic Trouble Code Descriptions
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Engine Control System
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P0421 - Catalyst Efficiency Below Threshold (Bank 1)
P0421 - Catalyst Efficiency Below Threshold (Bank 1)
