Operation CHARM
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Mitsubishi
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1996
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Eclipse L4-1996cc 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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Manufacturer Code Charts
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Engine Control System
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DTC 21
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Malfunction Indicator Light Flash Codes
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21 Upstream HO2S Shorted to Ground
21 Upstream HO2S Shorted to Ground
