P1638 Hyundai ECM (Microcontroller) – Malfunction

P1638 Hyundai ECM (Microcontroller) – Malfunction

Symptoms
– Engine Light ON (or Service Engine Soon Warning Light)
Hyundai Vehicle:Hyundai Sonata,Hyundai Elantra,Hyundai Tucson,Hyundai Veloster,Hyundai Accent,Hyundai Getz,Hyundai Genesis,Hyundai Veracruz
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