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Service bulletins for the 2014 Kia Sorento

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.

261 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
PI1803_TSB_R32019-11-07. Service bulletin. ENGINE AND ENGINE COOLING. PRODUCT IMPROVEMENT CAMPAIGN: KNOCK SENSOR DETECTION SYSTEM - ECU LOGIC IMPROVEMENT (PI1803). 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
TSB_PI1803_R22019-06-04. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; ENGINE AND ENGINE COOLING. PRODUCT IMPROVEMENT CAMPAIGN - KNOCK SENSOR DETECTION SYSTEM - ECU LOGIC IMPROVEMENT (PI1803) - 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.
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.
PI1803WX_TSB_R42019-04-30. Service bulletin. ENGINE; ENGINE AND ENGINE COOLING. TSB: ENGINE REPLACEMENT INSTRUCTIONS FOR DTC P1326 (PI1803W/X) - This bulletin provides information related to the Technical Service Bulletin previously published in November 2018 (PI1803, Rev 1, 01/02/2018) 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.
PI1803WX_TSB_R32019-04-30. Service bulletin. ENGINE; ENGINE AND ENGINE COOLING. TSB: ENGINE REPLACEMENT INSTRUCTIONS FOR DTC P1326 (PI1803W/X) - This bulletin provides information related to the Technical Service Bulletin previously published in November 2018 (PI1803, Rev 1, 01/02/2018) 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.
PI1803_OWN#2_SOR2019-04-30. Service bulletin. ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM:SOFTWARE. OWNER LETTER: Dear Kia Sorento Owner: Kia Motors America, Inc. is conducting an important Product Improvement Campaign to perform a software update on 2012-2014 MY Sorento vehicles equipped with 2.4L Gasoline Direct Injection ("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").
VPI1803WX_TSB_R22019-03-18. Service bulletin. ENGINE. VEHICLE PRODUCT IMPROVEMENT: ENGINE REPLACEMENT INSTRUCTIONS FOR DTC P1326 (PI1803W/X) - This bulletin has been revised to include additional information.This bulletin provides information related to the Technical Service Bulletin previously published in November 2018 (PI1803, Rev 1, 01/02/2018) 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.
VPI1803WX_TSB_R12019-03-18. Service bulletin. ENGINE. VEHICLE PRODUCT IMPROVEMENT: ENGINE REPLACEMENT INSTRUCTIONS FOR DTC P1326 (PI1803W/X)- This bulletin has been revised to include additional information This bulletin provides information related to the Technical Service Bulletin previously published in November 2018 (PI1803, Rev 1, 01/02/2018) 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.
VPI1803_TSB_R12019-02-19. Service bulletin. ENGINE AND ENGINE COOLING. PRODUCT IMPROVEMENT CAMPAIGN: KNOCK SENSOR DETECTION SYSTEM - ECU LOGIC IMPROVEMENT (PI1803) - 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.
VPI1803WX_TSB2019-01-07. Service bulletin. ENGINE. PRODUCT IMPROVEMENT CAMPAIGN - ENGINE REPLACEMENT INSTRUCTIONS FOR DTC P1326 (PI1803W/X) - This bulletin provides information related to the Technical Service Bulletin previously published in November 2018 (PI1803) 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.
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.
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.
WTYCS201606RETIR2017-08-15. Service bulletin. ENGINE AND ENGINE COOLING. CUSTOMER SATISFACTION BULLETIN 2016-06 - RETIRED. SEE WARRANTY BULLETIN 2017-09 (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.
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.
TSB-ENG137R12017-08-02. 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.
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.
TSBENG148R42017-02-07. Service bulletin. ENGINE. TSB REV4: CHATTER/RATTLE NOISE FROM ENGINE AFTER COLD SOAK - THIS BULLETIN PROVIDES INFORMATION ABOUT THE TIMING CHAIN TENSIONER REPLACEMENT ON SOME 2014~16MY CADENZA (VG), PRODUCED FROM FEBRUARY 1, 2013 THROUGH JANUARY 7, 2016, AND SOME 2014~2015MY SORENTO (XMA) VEHICLES, PRODUCED FROM DECEMBER 17, 2012 THROUGH DECEMBER 11, 2014, WHICH MAY EXPERIENCE A BRIEF CHATTERING OR RATTLING NOISE CONCERN FROM THE ENGINE ON START-UP, AFTER A COLD SOAK. AFTER CONFIRMING THE NOISE CONCERN, FOLLOW THE PROCEDURES OUTLINED IN THIS TSB TO RESOLVE THE CONCERN.
WTY008OWNER2017-02-02. Service bulletin. EQUIPMENT; ENGINE. OWNER LETTER: WTY008 - 2012-2014 MY SORENTO 2.4L GDI ENGINE WARRANTY EXTENSION - DEAR KIA SORENTO VEHICLE 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 2012-2014 MY SORENTO 2.4L GDI ENGINE TO 10 YEARS STARTING FROM THE DATE OF FIRST SERVICE OR 120,000 MILES, WHICHEVER COMES 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.
WTY008FORM2017-02-02. Service bulletin. ENGINE; EQUIPMENT. REQUEST FOR REIMBURSEMENT FORM: WTY008 - 2012-2014 MY SORENTO 2.4L GDI ENGINE WARRANTY EXTENSION PROGRAM - 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

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