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Spectra EX, 2.0 1, Standard
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Repair and Diagnosis
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Engine Performance
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System
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DTC Troubleshooting Procedures - 2.0L
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Troubleshooting For DTC
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DTC P0420: Main Catalyst Efficiency Below THRESHHOLD Bank 1
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Notes
DTC P0420: Main Catalyst Efficiency Below THRESHHOLD Bank 1: Notes
Fig 1: DTC P0420
Courtesy of KIA MOTORS AMERICA, INC.
Courtesy of KIA MOTORS AMERICA, INC.