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Hyundai
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2021
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Ioniq Plug-In Hybrid SEL
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Repair and Diagnosis
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Engine Performance
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System
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Engine Control System Diagnosis (PHEV) (2 Of 3)
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DTC P0300: Random/Multiple Cylinder Misfire Detected
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System Inspection
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Timing mark check
Timing mark check
IG KEY "OFF".
Check the timing mark.
Is the timing mark normal?
YES
Go to "
AIR LEAKAGE CHECK
" procedure.
NO
Repair and go to "
VERIFICATION OF VEHICLE REPAIR
" procedure.