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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 are shown. Show all

Bulletins, newest first
TSB_ENG222_R72025-03-04. Service bulletin. ENGINE. TECHNICAL SERVICE BULLETIN: EXCESSIVE OIL CONSUMPTION NU/GAMMA/THETA/KAPPA ENGINES - This bulletin has been revised to include additional information. New/revised sections of this bulletin are indicated by a black bar in the margin area. This bulletin provides information on diagnosing and/or repairing some 2011-2024MY vehicles (refer to the tables on pages 8-9 for applicable models and engine), which may exhibit a symptom of excessive oil consumption.
PI2108_OWNR_3012024-12-18. Other. ENGINE. PRODUCT IMPROVEMENT CAMPAIGN: OWNER RENOTIFICATION (PI2108) - This document is the owner renotification advising that Kia conducting an important Product Improvement Campaign to perform a software update on n 2019-2020 MY Kia Optima HEV & PHEV vehicles to protect the engine from excessive connecting rod bearing damage.
PI2108YZ_TSB_R12024-11-14. Service bulletin. ENGINE. TECHNICAL SERVICE BULLETIN: PRODUCT IMPROVEMENT CAMPAIGN: SUBSEQUENT REPAIR ACTION: ENGINE REPLACEMENT INSTRUCTIONS FOR DTC P1326 (PI2108Y/Z) - This bulletin has been revised to include additional information. New/revised sections of this bulletin are indicated by a black bar in the margin area. This bulletin provides information related to the Technical Service Bulletin previously published in (PI2108) titled “Knock Sensor Detection System - ECU Logic Improvement” for certain 2019-2020MY Optima P/HEV (JF P/HEV) vehicles equipped with Nu 2.0L GDI engine, produced from July 6, 2018 through October 28, 2019. Specifically, this bulletin provides instructions on which procedures to follow if, after installation of the KSDS, any one of the subject vehicles below return to the dealer with Diagnostic Trouble Code (DTC) P1326 (Knock Signal Range/Performance).
PI2108_OWNR_2012024-05-06. Service bulletin. ENGINE AND ENGINE COOLING. PRODUCT IMPROVEMENT CAMPAIGN: OWNER RENOTIFICATION (PI2108) - This document is the owner renotification advising that Kia is conducting a Product Improvement Campaign to perform a software update on 2019-2020 MY Kia Optima Hybrid (HEV) and Plug-In Hybrid (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").
PI1802YZ_TSB2023-09-06. Service bulletin. ENGINE AND ENGINE COOLING. SUBSEQUENT REPAIR ACTION: ENGINE REPLACEMENT INSTRUCTIONS FOR DTC P1326 (PI2108Y/Z) - This bulletin provides information related to the Technical Service Bulletin previously published in (PI2108) titled Knock Sensor Detection System - ECU Logic Improvement for certain 2019-2020MY Optima P/HEV (JF P/HEV) vehicles equipped with Nu 2.0L GDI engine, produced from July 6, 2018 through October 28, 2019. Specifically, this bulletin provides instructions on which procedures to follow if, after installation of the KSDS, any one of the subject vehicles below return to the dealer with Diagnostic Trouble Code (DTC) P1326 (Knock Signal Range/Performance).
TSB_ENG219_R12022-09-30. Service bulletin. ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM. TECHNICAL SERVICE BULLETIN: MAINTENANCE REMINDER FEATURE - This bulletin has been revised to include additional information. New/revised sections of this bulletin are indicated by a black bar in the margin area.This bulletin provides information on setting the "Service Interval Reminder" feature available on most 2014-2023MY Kia vehicles (refer to model list on page 2). If the service interval reminder is set, the customer will be informed to have the next maintenance service performed, which can positively affect vehicle longevity and performance. Refer to TSB ENG241 for 2023MY~ vehicles equipped with the Oil Life Management System (OLMS) feature not included in table on page 2.
SC205_TSB2022-08-18. Service bulletin. ENGINE AND ENGINE COOLING. VOLUNTARY EMISSIONS SERVICE CAMPAIGN: THETA 2.0L T-GDI ULEV LOGIC IMPROVEMENT FOR EMISSIONS (SC205) - This bulletin provides the procedure to update the emissions-related logic of the Engine Control Unit (ECU) on some 2016-2020MY Optima (JFa) ULEV vehicles, equipped with 2.0L T-GDI Theta engines, produced from April 21, 2015 through May 22, 2020, in order to improve fuel quantity learning to decrease the deterioration of the rear Oxygen Sensor.
SC205_OWNR2022-08-18. Service bulletin. ENGINE AND ENGINE COOLING. VOLUNTARY EMISSIONS SERVICE CAMPAIGN: OWNER NOTIFICATION - This document is the owner notification advising that Kia is conducting a Voluntary Emissions Service Campaign to update the software programming on your vehicle's Engine Control Module (SC205).
SC205_POC2022-08-18. Service bulletin. ENGINE AND ENGINE COOLING. SC205_POC: PROOF OF CORRECTION CARD
SC205_STKR2022-08-18. Service bulletin. ENGINE AND ENGINE COOLING. SC205_STKR: VOLUNTARY EMISSIONS SERVICE CAMPAIGN COMPLETION STICKER
SC205_QA2022-08-18. Service bulletin. ENGINE AND ENGINE COOLING. VOLUNTARY EMISSIONS SERVICE CAMPAIGN: QUESTION AND ANSWER - This document is the Question and Answer Guide containing the most frequently asked questions regarding the Voluntary Emissions Service Campaign (SC205).
SC205_DPSM2022-08-18. Service bulletin. ENGINE AND ENGINE COOLING. VOLUNTARY EMISSIONS SERVICE CAMPAIGN: DEALER PARTS AND SERVICE MANAGER MEMO - This document is the announcement to the dealer Parts and Service Managers that Kia is conducting a Voluntary Emissions Service Campaign on 2016-2020 MY Kia Optima vehicles equipped with the 2.0L Turbo-GDI engine to update the emission related logic of the Engine Control Module "ECM" with an improved version to ensure compliance with emissions regulations.
SC205_DP2022-08-18. Service bulletin. EQUIPMENT; ENGINE AND ENGINE COOLING. VOLUNTARY EMISSIONS SERVICE CAMPAIGN: DEALER PRINCIPAL MEMO - This document is the announcement to the dealer principals that Kia is conducting a Voluntary Emissions Service Campaign on 2016-2020 MY Kia Optima vehicles equipped with the 2.0L Turbo-GDI engine to update the emission related logic of the Engine Control Module "ECM" with an improved version to ensure compliance with emissions regulations.
TSB_ENG222_R62022-03-31. Service bulletin. ENGINE AND ENGINE COOLING. TECHNICAL SERVICE BULLETIN: EXCESSIVE OIL CONSUMPTION NU/GAMMA/THETA/KAPPA ENGINES - This bulletin has been revised to include additional information. New/revised sections of this bulletin are indicated by a black bar in the margin area. This bulletin provides information on diagnosing and/or repairing some 2011-2021MY vehicles (refer to the tables on pages 8-9 for applicable models and engine), which may exhibit a symptom of excessive oil consumption.
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_QA2022-03-02. Service bulletin. ENGINE AND ENGINE COOLING. PRODUCT IMPROVEMENT CAMPAIGN: QUESTION AND ANSWER - This document is the Question and Answer Guide containing the most frequently asked questions regarding the Product Improvement Campaign (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.
TSB_ENG222_R52022-01-20. Service bulletin. ENGINE; ENGINE AND ENGINE COOLING:ENGINE:OIL/LUBRICATION. TECHNICAL SERVICE BULLETIN: EXCESSIVE OIL CONSUMPTION NU/GAMMA/THETA/KAPPA ENGINES - This bulletin has been revised to include additional information. New/revised sections of this bulletin are indicated by a black bar in the margin area. This bulletin provides information on diagnosing and/or repairing some 2011-2021MY vehicles (refer to the tables on pages 8-9 for applicable models and engine), which may exhibit a symptom of excessive oil consumption.
TSB_ENG222_R42021-12-23. Service bulletin. EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY; ENGINE AND ENGINE COOLING. TECHNICAL SERVICE BULLETIN: EXCESSIVE OIL CONSUMPTION NU/GAMMA/THETA/KAPPA ENGINES - This bulletin has been revised to include additional information. New/revised sections of this bulletin are indicated by a black bar in the margin area. This bulletin provides information on diagnosing and/or repairing some 2011-2021MY vehicles (refer to the tables on pages 8-9 for applicable models and engine), which may exhibit a symptom of excessive oil consumption.
PS6862021-03-04. Service bulletin. ENGINE AND ENGINE COOLING. PITSTOP/TECHNICAL OPERATIONS - SMOKE MACHINE NOT TO BE USED FOR EMISSIONS TESTING WITH HEV/PHEV MODELS - This Pitstop provides information to properly test the evaporative emissions system in all Kia 2011MY~ Hybrid (HEV) and Plug-In Hybrid (PHEV) model vehicles. A smoke machine should NEVER be used when testing the evaporative system in a HEV/PHEV model vehicle.
TSB_ENG213_R12021-03-04. Service bulletin. ENGINE AND ENGINE COOLING. TECHNICAL SERVICE BULLETIN: DATA COLLECTION: EXTRACT CALIFORNIA EMISSIONS DATA FROM ECU (DC20). This bulletin has been revised to include additional information. New/revised sections of this bulletin are indicated by a black bar in the margin area. - This bulletin provides information related to extracting “in use performance tracking” emissions data from the Engine Control Unit (ECU) of certain vehicles sold in California. The California Air Resources Board (CARB) requires the emissions data from vehicles with a minimum of 3,000 accumulated miles without reprogramming or resetting.
TSB_CHA084_R62020-12-02. Service bulletin. ENGINE AND ENGINE COOLING; STEERING; ELECTRICAL SYSTEM. TECHNICAL SERVICE BULLETIN: PARTIAL REPAIR OF C-MDPS MOTOR, ECU, WORM GEAR AND/OR STEERING COLUMN HOUSING - This bulletin has been revised to include additional information. New/revised sections of this bulletin are indicated by a black bar in the margin area. This bulletin provides information regarding the partial repair of the Motor Driven Power Steering (MDPS) Motor, Electronic Control Unit (ECU), Worm Gear Assembly or Steering Column Housing on some 2010MY~ Kia models listed on page 8, equipped with a Column Motor Driven Power Steering (C-MDPS) unit.
TSB_CHA084_R52020-12-02. Service bulletin. STEERING; ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM. TECHNICAL SERVICE BULLETIN: PARTIAL REPAIR OF C-MDPS MOTOR, ECU, WORM GEAR AND/OR STEERING COLUMN HOUSING - This bulletin has been revised to include additional information. New/revised sections of this bulletin are indicated by a black bar in the margin area. This bulletin provides information regarding the partial repair of the Motor Driven Power Steering (MDPS) Motor, Electronic Control Unit (ECU), Worm Gear Assembly or Steering Column Housing on some 2010MY~ Kia models listed on page 8, equipped with a Column Motor Driven Power Steering (C-MDPS) unit.

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