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Service bulletins for the 2020 Kia Optima

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

121 on file from NHTSA, as of 2026-10-19.

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Only bulletins with component: Engine control module are shown. Show all

Bulletins, newest first
PI2108_TSB2022-03-02. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM):SOFTWARE. PRODUCT IMPROVEMENT CAMPAIGN NU 2.0L GDI - KNOCK SENSOR DETECTION SYSTEM (KSDS) ECU LOGIC IMPROVEMENT (PI2108) - This bulletin provides information related to a software update to the Engine Control Unit (ECU) to install the Knock Sensor Detection System (KSDS), in order to protect the Hybrid engine from excessive connecting rod bearing damage. This update is for certain 2019-2020MY Optima (JF HEV) and (PHEV) vehicles equipped with Nu 2.0L GDI engines, produced from July 6, 2018 through October 28, 2019.
PI2108_OWNR2022-03-02. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM):SOFTWARE. PRODUCT IMPROVEMENT CAMPAIGN: OWNER NOTIFICATION - This document is the owner notification advising that Kia is conducting a Product Improvement Campaign to perform a software update on 2019-2020 MY Kia Optima HEV & PHEV vehicles to protect the engine from excessive connecting rod bearing damage. The update will be done free of charge and will only involve the addition of newly developed computer software for the Engine Control Unit ("ECU") (PI2108).
PI2108_DPSM2022-03-02. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM). PRODUCT IMPROVEMENT CAMPAIGN: DEALER PARTS AND SERVICE MANAGER MEMO - This document is the announcement to the dealer Parts and Service Managers that Kia is conducting a Product Improvement Campaign to perform a software update to the Engine Control Unit (ECU) to protect the engine from excessive connecting rod bearing damage on 2019-2020 MY Kia Optima HEV vehicles manufactured from July 6, 2018 through October 28, 2019 and 2019-2020 MY Kia Optima PHEV vehicles manufactured from July 6, 2018 through May 30, 2019.
PI2108_DP2022-03-02. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM). PRODUCT IMPROVEMENT CAMPAIGN: DEALER PRINCIPAL MEMO - This document is the announcement to the dealer principals that Kia is conducting a Product Improvement Campaign to perform a software update to the Engine Control Unit (ECU) to protect the engine from excessive connecting rod bearing damage on 2019-2020 MY Kia Optima HEV vehicles manufactured from July 6, 2018 through October 28, 2019 and 2019-2020 MY Kia Optima PHEV vehicles manufactured from July 6, 2018 through May 30, 2019.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.