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Service bulletins for the 2017 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.

210 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
PI1802YZ_TSB2020-04-07. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM. PRODUCT IMPROVEMENT CAMPAIGN: TSB - ENGINE REPLACEMENT INSTRUCTIONS FOR DTC P1326 (PI1802Y/Z) - This bulletin has been revised to include additional information. This bulletin provides information related to the Technical Service Bulletin previously published in July 2018 (PI1802 Rev 10, 03/16/2020) titled Knock Sensor Detection System - ECU Logic Improvement. 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).
PI1802_TSB_R102020-04-07. Service bulletin. ENGINE AND ENGINE COOLING. PRODUCT IMPROVEMENT CAMPAIGN: TSB - REV 10 - KNOCK SENSOR DETECTION SYSTEM - ECU LOGIC IMPROVEMENT (PI1802) - This bulletin has been revised to include additional information. 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 engine from excessive connecting rod bearing damage.
PI1802_TSB_R92020-03-05. Service bulletin. ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM. TSB - PRODUCT IMPROVEMENT CAMPAIGN - KNOCK SENSOR DETECTION SYSTEM - ECU LOGIC IMPROVEMENT (PI1802) Rev.9 - 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 engine from excessive connecting rod bearing damage.
PI1802WX_TSB_R72020-02-03. Service bulletin. ENGINE AND ENGINE COOLING; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; ELECTRICAL SYSTEM:WIRING. PRODUCT IMPROVEMENT CAMPAIGN: ENGINE REPLACEMENT INSTRUCTIONS FOR DTC P1326 (PI1802W/X) - This bulletin has been revised to include additional information.This bulletin provides information related to the Technical Service Bulletin previously published in July 2018 (PI1802, Rev 6, 01/31/2019) titled "Knock Sensor Detection System - ECU Logic Improvement". Specifically, this bulletin provides instructions on which procedures to follow if, after installation of the KSDS, any one of the subject vehicles below returns to the dealer with Diagnostic Trouble Code (DTC), P1326.
PI1802_OWN#3_OPT2020-01-04. Service bulletin. ENGINE AND ENGINE COOLING. Owner Letter - PRODUCT IMPROVEMENT CAMPAIGN (PI1802) **THIRD NOTICE** - Dear Kia Optima Owner: Kia Motors America, Inc. is conducting an important Product Improvement Campaign to perform a software update on some 2014 MY Optima vehicles equipped with 2.4L Gasoline Direct Injection ("GDI") engines, and all 2015-2018 MY Optima vehicles equipped with 2.4L GDI and 2.0L Turbocharged GDI ("T-GDI") engines 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").
PI1802WX_TSB_R62019-12-09. Service bulletin. ENGINE AND ENGINE COOLING. TECHNICAL SERVICE BULLETIN PI1802W/X (Rev 6) - PRODUCT IMPROVEMENT CAMPAIGN - ENGINE REPLACEMENT INSTRUCTIONS - This bulletin has been revised to include additional information. This bulletin provides information related to the Technical Service Bulletin previously published in July 2018 (PI1802, Rev 6, 01/31/2019) titled '"Knock Sensor Detection System - ECU Logic Improvement". Specifically, this bulletin provides instructions on which procedures to follow if, after installation of the KSDS, any one of the subject vehicles below returns to the dealer with Diagnostic Trouble Code ("DTC"), P1326.
TSBCHA084_R42019-12-09. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; ENGINE AND ENGINE COOLING; STEERING. TECHNICAL SERVICE BULLETIN: PARTIAL REPAIR OF C-MDPS MOTOR, ECU AND/OR STEERING COLUMN HOUSING - This bulletin has been revised to include additional information.This bulletin provides information regarding the partial repair of the Motor Driven Power Steering (MDPS) Motor, Electronic Control Unit (ECU) or Steering Column Housing on some 2010MY~ Kia models listed on page 5 equipped with a Column Motor Driven Power Steering (C-MDPS) unit. Follow the MDPS Flowchart (page 2) along with the MDPS DTC Table (page 3) procedure outlined in this bulletin before replacing the C-MDPS Motor, ECU or Steering Column Housing.
PI1802_TSB_R82019-12-09. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; ENGINE AND ENGINE COOLING. TSB - Product Improvement Campaign: KNOCK SENSOR DETECTION SYSTEM - ECU LOGIC IMPROVEMENT (PI1802) - This bulletin has been revised to include additional information. 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 engine from excessive connecting rod bearing damage.
PS6162019-11-07. Service bulletin. ENGINE AND ENGINE COOLING. PITSTOP: LOWER ENGINE SERVICE COVER BOLT LOCATIONS - This Pitstop provides information on the correct bolt location of the lower engine service cover on 2016-2020MY Optima 2.4L and 2.0L equipped vehicles. The lower engine service cover is secured by seven (7) retaining bolts. Installation of the two (2) long bolts in the incorrect location may cause puncture or damage to the oil pan in the event that the vehicle is bottomed out while driving. If the oil pan is damaged or punctured, the engine oil may leak, possibly causing engine damage. This
PI1802_TSB_R72019-10-03. Service bulletin. ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM. PRODUCT IMPROVEMENT CAMPAIGN - KNOCK SENSOR DETECTION SYSTEM - ECU LOGIC IMPROVEMENT (PI1802) - 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 engine from excessive connecting rod bearing damage. The KSDS detects vibrations indicating the onset of excessive connecting rod bearing wear. It is designed to alert the driver at an early stage of bearing wear before the occurrence of severe engine damage, including engine failure. If vibrations caused by bearing wear start to occur, the Malfunction Indicator Lamp (MIL) will blink continuously, and the vehicle will be placed in Limp Home Mode. This will reduce further damage to the engine and ensure that the vehicle occupants are not exposed to the risk of a more severe engine failure. At that time, Diagnostic Trouble Code (“DTC”) P1326, specific to the KSDS, will be recorded in the ECU. The vehicle can continue to be operated for a limited time in Limp Home Mode, but it will accelerate slowly and have a reduced maximum speed. Also, engine RPMs will be limited to approximately 1800-2000 RPM.
TSBENG2062019-08-07. Service bulletin. ENGINE; ELECTRICAL SYSTEM:SOFTWARE. TSB: 1.6T GDI ULEV MIL ON LOGIC IMPROVEMENT FOR P0128 - This bulletin provides the procedure to improve the logic of the ECU (Electronic Control Unit) on some 2016-2017MY Optima (JFa) 1.6T GDI ULEV DCT vehicles, produced from September 28, 2015 through September 03, 2016, which exhibit a MIL (Malfunction Indicator Lamp) illuminated with DTC P0128, even though there are no system faults.
PI1802_OWNR2_OPT2019-07-04. Service bulletin. ENGINE AND ENGINE COOLING. PI1802_OWNR2_OPT: Kia Motors America, Inc. is conducting an important Product Improvement Campaign to perform a software update on some 2014 MY Optima vehicles equipped with 2.4L Gasoline Direct Injection ("GDI") engines, and all 2015-2018 MY Optima vehicles equipped with 2.4L GDI and 2.0L Turbocharged GDI ("T-GDI") engines 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").
TSBENG205_R12019-04-30. Service bulletin. ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM. TSB: SERVICE ACTION: WIRING SIGNAL INTERFERENCE CHECK & ENGINE NOISE INSPECTION (SA379) - This bulletin provides information related to an expanded diagnostic test that is now required on a number of vehicles previously diagnosed with Diagnostic Trouble Code ("DTC") P1326. Using the procedures published in TSB PI1802W/X and PI1803W/X, the subject vehicles were diagnosed and determined to require an engine replacement and are currently being held at dealers pending repair. As a result of additional field data collection and analysis, the initial diagnosis method has been updated to improve test result accuracy. Prior to performing an engine replacement on any of the VINs affected by this Service Action, the engine condition needs to be re-assessed utilizing an updated/expanded diagnostic process.
TSBENG2052019-04-30. Service bulletin. ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM. TSB: SERVICE ACTION: WIRING SIGNAL INTERFERENCE CHECK & ENGINE NOISE INSPECTION (SA379) - This bulletin provides information related to an expanded diagnostic test that is now required on a number of vehicles previously diagnosed with Diagnostic Trouble Code ("DTC") P1326. Using the procedures published in TSB PI1802W/X and PI1803W/X, the subject vehicles were diagnosed and determined to require an engine replacement and are currently being held at dealers pending repair. As a result of additional field data collection and analysis, the initial diagnosis method has been updated to improve test result accuracy. Prior to performing an engine replacement on any of the VINs affected by this Service Action, the engine condition needs to be re-assessed utilizing an updated/expanded diagnostic process.
PI1802WX_TSB_R52019-04-30. Service bulletin. ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM:SOFTWARE. TSB: ENGINE REPLACEMENT INSTRUCTIONS FOR DTC P1326 (PI1802W/X) - This bulletin provides information related to the Technical Service Bulletin previously published in July 2018 (PI1802, Rev 6, 01/31/2019) titled "Knock Sensor Detection System - ECU Logic Improvement". Specifically, this bulletin provides instructions on which procedures to follow if, after installation of the KSDS, any one of the subject vehicles below returns to the dealer with Diagnostic Trouble Code ("DTC"), P1326.
PI1802WX_TSB_R42019-04-30. Service bulletin. ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM:SOFTWARE. TSB: ENGINE REPLACEMENT INSTRUCTIONS FOR DTC P1326 (PI1802W/X) - This bulletin provides information related to the Technical Service Bulletin previously published in July 2018 (PI1802, Rev 6, 01/31/2019) titled "Knock Sensor Detection System - ECU Logic Improvement". Specifically, this bulletin provides instructions on which procedures to follow if, after installation of the KSDS, any one of the subject vehicles below returns to the dealer with Diagnostic Trouble Code ("DTC"), P1326.
VPI1802WX_TSB_R32019-03-18. Service bulletin. ENGINE. VEHICLE PRODUCT IMPROVEMENT: ENGINE REPLACEMENT INSTRUCTIONS FOR DTC P1326 (PI1802W/X)- This bulletin has been revised to include additional information This bulletin provides information related to the Technical Service Bulletin previously published in July 2018 (PI1802, Rev 6, 01/31/2019) titled ?Knock Sensor Detection System - ECU Logic Improvement?. Specifically, this bulletin provides instructions on which procedures to follow if, after installation of the KSDS, any one of the subject vehicles below returns to the dealer with Diagnostic Trouble Code (?DTC?), P1326..
VPI1802WX_TSB_R22019-02-19. Service bulletin. ENGINE AND ENGINE COOLING. PRODUCT IMPROVEMENT CAMPAIGN: ENGINE REPLACEMENT INSTRUCTIONS FOR DTC P1326 (PI1802W/X) - This bulletin has been revised to include additional information. This bulletin provides information related to the Technical Service Bulletin previously published in July 2018 (PI1802, Rev 5, 12/20/2018) titled ?Knock Sensor Detection System - ECU Logic Improvement?. Specifically, this bulletin provides instructions on which procedures to follow if, after installation of the KSDS, any one of the subject vehicles below returns to the dealer with Diagnostic Trouble Code (?DTC?), P1326.
VPI1802_TSB_R62019-02-19. Service bulletin. ENGINE AND ENGINE COOLING. PRODUCT IMPROVEMENT CAMPAIGN:KNOCK SENSOR DETECTION SYSTEM - ECU LOGIC IMPROVEMENT (PI1802) - This bulletin has been revised to include additional information.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 engine from excessive connecting rod bearing damage.
DC_201901252019-02-19. Service bulletin. ENGINE AND ENGINE COOLING. RECENT KIA MEDIA REPORTS, January 25, 2019 Update - Dear Kia Retailer, At Kia, safety is a top priority and we wrote to you last August and again last October to provide you with updates regarding news reports about non-collision fires in Kia vehicles and the status of Kia?s cooperative work with NHTSA.
VPI1802_OWNER_OP2019-02-19. Service bulletin. ENGINE AND ENGINE COOLING. Dear Kia Optima Owner: Kia Motors America, Inc. is conducting an important Product Improvement Campaign to perform a software update on all 2016-2018 MY Optima vehicles equipped with 2.4L Gasoline Direct Injection (?GDI?) and 2.0L Turbocharged GDI (?T-GDI?) engines 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?).
PS567_R12018-11-13. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL; FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP. PITSTOP: DTC P0456/P0442 WITH FUEL PUMP SEAL DAMAGE - This Pitstop provides information regarding DTC P0456/P0442 (Evaporative Emissions System ? (Very) Small Leak Detected) or fuel smell on some 2017MY Cadenza (YG) vehicles, produced before August 7, 2017 and some Optima Hybrid (JF HEV) vehicles, produced before August 16, 2017. When addressing the concern with DTC P0456/P0442 and the vapor lines, fuel cap, and all other corresponding circuits are found to be within specifications, it may be necessary to inspect the fuel pump seal for damage. If this seal is found to be torn or split, replace the fuel pump seal by referring to the ?Engine Control / Fuel System ? Fuel Delivery System ? Low Pressure Fuel Pump ? Repair procedures? chapter in the applicable Shop Manual on KGIS.
VSC152_DSM2018-10-09. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL; EQUIPMENT:OTHER:LABELS. EMISSIONS SERVICE CAMPAIGN (SC152) - DEALER PARTS AND SERVICE MANAGER LETTER - Kia Motors America, Inc. is conducting a Voluntary Emissions Service Campaign to replace the Vehicle Emission Control Information (VECI) Label on all 2015, 2016, and some 2017 MY Optima Hybrid vehicles produced from July 24, 2014 through June 12, 2017, and on some 2018 MY Stinger rear-wheel drive (RWD) and all-wheel drive (AWD) vehicles equipped with Theta 2.0-T engines, produced from September 29, 2017 through November 20, 2017. An incorrect VECI label was installed during the production of these vehicles. The VECI label is extremely important when performing maintenance, emissions inspection, or ordering engine and engine management related parts. It also contains the code that tells a testing facility which test to perform to ensure the vehicle is tested to the correct emission standard.
VSC152_DP2018-10-09. Service bulletin. EQUIPMENT:OTHER:LABELS; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL. EMISSIONS SERVICE CAMPAIGN (SC152) - DEALER PRINCIPAL LETTER - Kia Motors America, Inc. is conducting a Voluntary Emissions Service Campaign to replace the Vehicle Emission Control Information (VECI) Label on all 2015, 2016, and some 2017 MY Optima Hybrid vehicles produced from July 24, 2014 through June 12, 2017, and on some 2018 MY Stinger rear-wheel drive (RWD) and all-wheel drive (AWD) vehicles equipped with Theta 2.0-T engines, produced from September 29, 2017 through November 20, 2017. An incorrect VECI label was installed during the production of these vehicles. The VECI label is extremely important when performing maintenance, emissions inspection, or ordering engine and engine management related parts. It also contains the code that tells a testing facility which test to perform to ensure the vehicle is tested to the correct emission standard.
VPI1802_QA2018-08-06. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; ELECTRICAL SYSTEM:SOFTWARE; ENGINE; POWER TRAIN. Q & A - This document is the Q & A for the new Product Improvement Campaign to provide information regarding a software update to the Engine Control Unit (ECU) to protect the engine from excessive connecting rod bearing damage.

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