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Home >> Kia >> 2016 >> Optima SX Limited >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 108 (Engine Control System Diagnosis - 1.6L (2 Of 3) - Optima (Except HEV)) >> DTC P0420: Catalyst System Efficiency Below Threshold (Bank 1) >> DTC Information >> DTC Description

DTC Description

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This DTC sets when the catalyst system efficiency is below the acceptable threshold.

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