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Hyundai TSB #21-01-051H

2020 Hyundai Sonata

TSB Document:

MC-10199099-0001.pdf

Affected Component: ENGINE AND ENGINE COOLING

Summary: This bulletin provides information related to an Electronic Control Module (ECM) software update which revises the OBD Air Fuel Ratio Imbalance (AFRI) monitor function frequency and cylinder imbalance diagnosis logic.

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Date Published: JUN 22, 2021
NHTSA TSB #: 10199099

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