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Home >> Hyundai >> 2021 >> Ioniq Hybrid SEL >> Repair and Diagnosis >> Hybrid/Electric Powertrain >> Testing and Diagnosis >> HCU/Low Dc-Dc Converter Diagnosis (HEV) >> DTC P1696: Immobilizer-Authentication Fail >> General Description

DTC P1696: Immobilizer-Authentication Fail: General Description

Immobilizer system performs mutual authentication among Key, SMK, HPCU and Engine ECU. With this authentication, Immobilizer system allows to start Main Motor and Engine running.

NOTE: HPCU (Hybrid Power Control Unit)
SMK (Smart Key Control Module)