WenmarOpen by Wenmar Pro

Service bulletins for the 2014 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.

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

By type

By component

By trouble code

By topic

Only bulletins with component: Engine are shown. Show all

Bulletins, newest first
DC_201808282018-10-09. Service bulletin. ELECTRICAL SYSTEM; ENGINE; EQUIPMENT. DEALER COMMUNICATION - RECENT KIA MEDIA REPORTS - Dear Kia Retailer, You and your customers may have seen recent media reports regarding thermal incidents in Kia vehicles or NHTSA?s announcement of the opening of a Defect Petition for fire cases involving the 2011-14 Sorentos and Optimas, and I want to update you on KMA?s response to this issue. All automobiles contain combustible materials and a vehicle fire may be a result of any number of complex factors which must be carefully evaluated by trained technicians to, if possible, determine its cause and, ultimately, determine if a defect trend exists. At Kia, customer safety is paramount and although both KMA and NHTSA have independently concluded that no defect trends exist, KMA has significantly increased its committed resources to ensure that all thermal incidents are fully evaluated.
VPI1802_TSB_R12018-09-10. Service bulletin. ENGINE AND ENGINE COOLING. TSB: 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. This update is for: * Some 2014MY Optima (TF) vehicles equipped with 2.4L GDI engines, manufactured at KMC from August 29, 2013 through April 25, 2014; * All 2015MY Optima (TF/QF) vehicles equipped with 2.4L GDI and 2.0L Turbocharged GDI (T-GDI) engines; * All 2014-2015MY Sportage (SL) vehicles equipped with 2.4L GDI and 2.0L Turbocharged GDI (T-GDI) engines; * All 2015MY Sorento (XMa) vehicles equipped with 2.4L GDI engines, manufactured from January 3, 2014 through December 11, 2014. 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. Kia is requesting the completion of this Product Improvement Campaign on all affected vehicles.
VPI1802_OWNER_OP2018-09-10. Service bulletin. ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING. PRODUCT IMPROVEMENT CAMPAIGN: 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 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?).
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.
VPI1802_DSM2018-08-06. Service bulletin. ENGINE; POWER TRAIN; ELECTRICAL SYSTEM:SOFTWARE. DEALER SERVICE MANAGER NOTICE - This notice advised the dealer service manager of the new Product Improvement Campaign to perform a software update to the Engine Control Unit (ECU) to protect the engine from excessive connecting rod bearing damage.
VPI1802_DP2018-08-06. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; ENGINE. DEALER PRINCIPAL NOTICE - This notice advised the dealer principal of the new Product Improvement Campaign to perform a software update to the Engine Control Unit (ECU) to protect the engine from excessive connecting rod bearing damage.
PS5392018-04-16. Service bulletin. ENGINE AND ENGINE COOLING. PITSTOP - ENGINE COMPONENT RE-USE GUIDELINES - In general, parts and components removed during engine repairs should be considered serviceable, and should be thoroughly cleaned and transferred to the new engine.
PT20201-0002R42017-10-15. Service bulletin. ENGINE. PARTS BULLETIN - THETA II ENGINE SAFETY RECALL (SC147) - This bulletin provides information related to the inspection and, if necessary, replacement of the engine assembly on certain 2011 to 2014 model year Optima, Sorento, and Sportage vehicles. For repair information please refer to Technical Service Bulletin SC147.
WTYCS2017012017-08-15. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; ENGINE AND ENGINE COOLING. CUSTOMER SATISFACTION BULLETIN: 2017-01 - 2014 MY OPTIMA (TF) ENGINE SHORT BLOCK WARRANTY EXTENSION - The purpose of this bulletin is to provide information related to the extension of the New Vehicle Limited Warranty for the Engine Short Block Assembly (engine block, crankshaft and bearings, connecting rods and bearings and pistons) on certain 2014 MY Optima (TF) vehicles with 2.4L GDI or 2.0L Turbo GDI engine to 10 years starting from the date of first service or 120,000 miles whichever occurs first, regardless of whether the vehicle owner is an original or subsequent vehicle owner.
WTYCS201609RETIR2017-08-15. Service bulletin. ENGINE. CUSTOMER SATISFACTION BULLETIN 2016-09 - RETIRED FOR CERTAIN OPTIMA MODEL VEHICLES. SEE CUSTOMER SATISFACTION BULLETIN 2017-01. FOR OTHER OPTIMA MODELS, SEE WTY BULLETIN2017-09 (SC147)
WTY201709R42017-08-15. Service bulletin. ENGINE AND ENGINE COOLING. WARRANTY BULLETIN: 2017-09.R4 - SC147 Claims Processing Procedures - This Warranty Bulletin accompanies TSB SC147 Theta II Engine Inspection and/or Replacement and is provided to dealers for specific guidance with claim administration and processing of SC147 warranty claims.
PT20201-0002R32017-08-15. Service bulletin. ENGINE AND ENGINE COOLING. PARTS BULLLETIN: 20201-0002 (Revision 3.1) - This bulletin provides information related to the inspection and, if necessary, replacement of the engine assembly on certain 2011 to 2014 model year Optima, Sorento, and Sportage vehicles.
PS4692017-08-02. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL. PITSTOP: MANUAL EVAPORATIVE EMISSIONS TEST FOR HARD TO FIND/SMALL LEAKS - If the malfunction indicator lamp (MIL) is illuminated with DTC(s) P0442, P0455, P0456, or P0457 (Evaporative Emissions System-Leak detected) and the evaporative (EVAP) leak self-test resulted in NTF, a manual EVAP test is recommended.
TSB-ENG160R12017-08-02. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; ENGINE. TSB: ECU UPGRADE ? MIL ON WITH DTC(s) P0420/P0171 - This bulletin provides information related to the ECU software upgrade for some 2012~2015MY Optima (QF) vehicles, produced from August 12, 2011 to October 2, 2015, some 2012~2015MY Sorento (XMa) vehicles, produced from April 19, 2011 to December 11, 2014, some 2011~2015MY Optima (TF) vehicles, produced from August 12, 2010 to July 23, 2015, and some 2014~2016MY Sportage (SL) vehicles, produced from September 30, 2013 to November 16, 2015, which may experience a malfunction indicator lamp (MIL) illuminated with the Electronic Control Unit (ECU) system-related DTC(s): P0420 and possibly P0171. This concern occurs most commonly during prolonged engine braking while descending a steep grade.
PS3282017-08-02. Service bulletin. ELECTRICAL SYSTEM; FUEL SYSTEM, GASOLINE; ENGINE. PITSTOP: HESITATION IN ELECTRIC AND GAS MODES - When diagnosing an Optima Hybrid with an off idle hesitation concern that can be duplicated, and no DTC(s) codes (active or history) are stored, access MCU > Current Data to check the status of the MCU warning flag.
TSB-ENG137R22017-08-02. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL. TSB: DATA COLLECTION: EXTRACT CALIFORNIA EMISSIONS DATA FROM ECU (DC005) - This bulletin provides information related to extracting ?in use performance tracking? emissions data from the engine control unit (ECU) in certain vehicles sold in California.
TT0402017-08-02. Service bulletin. ENGINE. TECH TIP: DTCs POC17 and P1C76 not clearing - Perform the motor/HSG resolver calibration located in the S/W management section of the ?Motor Control Unit? (MCU) system.
PS2802017-08-02. Service bulletin. FUEL SYSTEM, GASOLINE; ENGINE AND ENGINE COOLING:ENGINE:OTHER FUEL TYPES:TURBO/SUPERCHARGER; ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER. TURBOCHARGER OIL LINE INSPECTION - Follow the procedure in this article to properly inspect/clean the oil feed and return lines.
TSB-SC135R12017-08-02. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL; EQUIPMENT ADAPTIVE/MOBILITY. TSB: VOLUNTARY EMISSIONS SERVICE CAMPAIGN: EVAPORATIVE CANISTER INSPECTION AND/OR REPLACEMENT (SC135) - This bulletin provides information to inspect and/or replace the evaporative canister assembly on some Optima (TF) vehicles, produced from September 2, 2010 through November 29, 2014, some Optima Hybrid (TF HEV) vehicles, produced from February 15, 2011 through November 29, 2014, some Rondo (UN) vehicles, produced from April 1, 2009 through July 30, 2010, and some Sedona (VQ) vehicles, produced from April 1, 2009 through June 17, 2014. The subject vehicles originally sold or currently registered in one of twenty-eight (28) salt belt states may experience a leak detection warning of the evaporative emission systems, along with DTC(s) P0442 or P0455. For vehicles originally sold or currently registered in one of the twenty-eight (28) salt belt states, (AK, CT, DC, DE, IA, IL, IN, MA, MD, ME, MI, MN, MO, NH, NJ, NY, OH, PA, RI, VT, WI, WV, KS, KY, NE, ND, SD and UT), the evaporative canister will be inspected, and if no leak is found, the mounting bracket will be replaced with a new improved part. If a crack in the evaporative canister is found, the canister will be replaced with a new improved part. Before conducting the procedure, verify the vehicle is included in the list of affected VINs. For vehicles in other states, Kia is extending the warranty on the evaporative canister from 5 years/60,000 miles to 10 years/120,000 miles, whichever occurs first starting from the date of first service. Follow the procedures outlined in this bulletin to resolve the concern.
TSB-ENG1602017-08-02. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; ENGINE. TSB: ECU UPGRADE ? MIL ON WITH DTC(s) P0420/P0171 - This bulletin provides information related to the ECU software upgrade for some 2012~2015MY Optima (QF) vehicles, produced from August 12, 2011 to October 2, 2015, some 2012~2015MY Sorento (XMa) vehicles, produced from April 19, 2011 to December 11, 2014, some 2011~2015MY Optima (TF) vehicles, produced from August 12, 2010 to July 23, 2015, and some 2014~2016MY Sportage (SL) vehicles, produced from September 30, 2013 to November 16, 2015, which may experience a malfunction indicator lamp (MIL) illuminated with the Electronic Control Unit (ECU) system-related DTC(s): P0420 and possibly P0171. This concern occurs most commonly during prolonged engine braking while descending a steep grade.
PS3272017-08-02. Service bulletin. EQUIPMENT; ENGINE. PITSTOP: RESETTING CYLINDER BALANCE ADAPTATION VALUES - When addressing a cylinder balance concern on a vehicle equipped with a 2.4L GDI engine, it is important to note that the DTC may recur after replacement of any faulty component(s) and resetting adaptive values. See this Article for information on resetting cylinder balance adaptation values.
PS3222017-08-02. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL. PIT STOP: DTC P0456 AND CHARCOAL CANISTER LEAKS - When addressing a concern related to a DTC P0456 (Evaporative Emissions System ? Small Leak Detected), and an inspection of the vapor lines, connections and fuel cap reveal no abnormalities, closely inspect the mounting holes of the charcoal canister for visible cracks.
WTY004OWNER2017-03-10. Service bulletin. EQUIPMENT; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; ENGINE. OWNER LETTER: WTY004 - DEAR KIA OPTIMA OWNER: KIA MOTORS AMERICA TAKES PRIDE IN PROVIDING YOU WITH HIGH QUALITY AND DEPENDABLE VEHICLES. IN ORDER TO MAINTAIN THESE STANDARDS, KIA IS EXTENDING THE WARRANTY COVERAGE, TO ALL OWNERS, FOR THE ENGINE’S “SHORT BLOCK” ASSEMBLY ON 2011-2014 MODEL YEAR OPTIMA VEHICLES WITH 2.4L GDI OR 2.0L TURBO GDI TO 10 YEARS STARTING FROM THE DATE OF FIRST SERVICE OR 120,000 MILES, WHICHEVER OCCURS FIRST. THE SHORT BLOCK CONSISTS OF THE ENGINE BLOCK, CRANKSHAFT AND BEARINGS, CONNECTING RODS AND BEARINGS AND PISTONS. THIS WARRANTY EXTENSION ADDRESSES ISSUES WITH CONNECTING ROD WEAR WHICH RESULTS IN KNOCKING NOISE FROM THE ENGINE. THE KNOCKING NOISE INCREASES IN FREQUENCY AS THE ENGINE RPM INCREASES. IF THE VEHICLE CONTINUES TO BE DRIVEN WITH A WORN CONNECTING ROD BEARING, THE BEARING CAN FAIL AND MAY RESULT IN ENGINE FAILURE.
WTY004FORM2017-03-10. Service bulletin. ENGINE. REQUEST FOR REIMBURSEMENT FORM: WTY004 - IF YOU HAVE PAID TO HAVE YOUR ENGINE REPAIRED/REPLACED DUE TO CONNECTING ROD FAILURE, YOU MAY BE ELIGIBLE FOR REIMBURSEMENT FOR SOME OR ALL OF THAT EXPENSE. MAIL THIS COMPLETED REQUEST FOR REIMBURSEMENT FORM TO KIA, ALONG WITH DOCUMENTATION SPECIFIED BELOW, FOR REVIEW AND CONSIDERATION TO THE FOLLOWING ADDRESS: CONSUMER ASSISTANCE CENTER, KIA MOTORS AMERICA, INC., P.O. BOX 52410, IRVINE, CA 92619-2410, 1-800-333-4542
WTY004DEALERPSM2017-03-10. Service bulletin. ENGINE. DEALER PARTS AND SERVICE MANAGER MEMO: WTY004 - EFFECTIVE IMMEDIATELY, KIA MOTORS AMERICA, INC. HAS EXTENDED THE WARRANTY COVERAGE OF THE KIA NEW VEHICLE LIMITED WARRANTY FOR THE SHORT BLOCK ASSEMBLY (ENGINE BLOCK, CRANKSHAFT AND BEARINGS, CONNECTING RODS AND BEARINGS AND PISTONS) ON ALL 2011-2014 MODEL YEAR OPTIMA VEHICLES WITH 2.4L GDI OR 2.0L TURBO GDI ENGINE TO 10 YEARS STARTING FROM THE DATE OF FIRST SERVICE OR 120,000 MILES, WHICHEVER COMES FIRST, REGARDLESS OF WHETHER THE VEHICLE OWNER IS AN ORIGINAL OR SUBSEQUENT VEHICLE OWNER. THE PURPOSE OF THIS WARRANTY EXTENSION IS TO ADDRESS ISSUES WITH CONNECTING ROD AND BEARING WEAR THAT CAN LEAD TO ENGINE FAILURE. OPTIMA HYBRID VEHICLES ARE NOT INCLUDED IN THIS WARRANTY EXTENSION PROGRAM.

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