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Home >> Hyundai >> 2020 >> Sonata SEL >> Repair and Diagnosis >> Accessories & Equipment >> Anti-Theft Systems >> Immobilizer Diagnosis (Except HEV) >> DTC P1678-00: Immobilizer-EMS No Request (EMS Data Line Open, No Immo.) >> DTC Information And Inspection >> DTC Setting Condition

DTC Setting Condition

Trouble Shooting Condition Possible Cause
Main Action
  • Monitor the output current
  1. Open or short
  2. Faulty EMS*
  3. Faulty IMMOBILIZER*
Threshold Value
  • Data has not been received from the EMS* within 5 sec since the ignition was turned on.
Diagnostic Time
  • 2 sec~5 sec
DTC Clearing
  • Clear the DTC using GDS
NOTE: IMMOBILIZER*: "IBU"
EMS*: "ECM'V'PCM"
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