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Home >> Hyundai >> 2015 >> Azera Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Diagnosis (2 Of 3) >> DTC P0420: Catalyst System Efficiency below Threshold (Bank 1) >> General Information >> DTC Description
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DTC Description

If the oxygen storage time for Bank 1 is lower than threshold, the PCM determines that a fault exists and a DTC is stored.

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