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Service bulletins for the 2015 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.

202 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-ENG143R12017-08-02. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:BELTS AND ASSOCIATED PULLEYS; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CRANKCASE (PCV). TSB: SERVICE ACTION: ENGINE CRANKSHAFT PULLEY AND BOLT REPLACEMENT (SA170) - This bulletin provides the information to replace the crankshaft pulley and crankshaft bolt on some 2015MY Optima (QF) and 2015MY Sorento (XMa) vehicles, produced from June 30, 2014 through July 14, 2014 and equipped with 2.4L Theta engines.
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.
PS4002017-01-31. Service bulletin. VEHICLE SPEED CONTROL; ENGINE. PITSTOP: SMART PEDAL FEATURE - THE “SMART PEDAL” IS AN INTEGRAL PART OF THE ENGINE MANAGEMENT SYSTEM (EMS) FUNCTIONALITY WHICH MONITORS AND PREVENTS THE SIMULTANEOUS ACTIVATION OF ACCELERATOR AND BRAKE PEDALS. WHEN ENGAGED, THE FEATURE REDUCES ENGINE POWER TO IDLE. MOST CUSTOMERS WILL NEVER NOTICE THE SMART PEDAL FEATURE WHEN ACTIVE, HOWEVER, CUSTOMERS WHO TEND TO REST THEIR FOOT ON THE BRAKE PEDAL WHILE DRIVING MIGHT DESCRIBE A HESITATION OR DELAY SYMPTOM AND NOT REALIZE THAT THE EMS ELECTRONIC CONTROL MODULE IS INTERVENING, AS DESIGNED.
PS4172017-01-26. Service bulletin. ENGINE. PITSTOP: DTC P0315 - CRANKSHAFT POSITION (CKP) SENSOR VARIATION NOT LEARNED - WHEN ENCOUNTERING A CUSTOMER COMPLAINT OF ENGINE MISFIRE WITH A MALFUNCTION INDICATOR LIGHT (MIL) ON IN THE DASH, CHECK FOR THE PRESENCE OF DTC P0315 – CRANKSHAFT POSITION SENSOR (CKP) VARIATION NOT LEARNED. USE THE VMI TO VIEW THE SCOPE PATTERN OF THE CRANKSHAFT POSITION SENSOR SIGNAL. VERIFY A GOOD EQUAL CRANKSHAFT SENSOR PATTERN IS PRESENT WITH NO DIPS OR VARIATION, AS SHOWN IN FIGURE A, IN THE SIGN WAVE PATTERN. IF THE PATTERN IS IDENTICAL TO FIGURE A, USE GDS/KDS TO PERFORM A CRANK SENSOR RELEARN PROCEDURE. IF THE PATTERN SHOWS A DIP OR VARIATION, AS SHOWN IN FIGURE B, REPLACE THE FLEX PLATE TO RESOLVE THE CONCERN.
TSBENG1472017-01-26. Service bulletin. ENGINE; ELECTRICAL SYSTEM:SOFTWARE. TSB: DATA COLLECTION: EXTRACT CALIFORNIA EMISSIONS DATA FROM ECU (DC1501) - 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. TO FACILITATE COLLECTION OF THIS DATA AT THE DEALER LEVEL, GDS/KDS SCREENSHOTS WILL ALLOW THE CAPTURE OF RELEVANT PARAMETERS.
TSBENG148R32017-01-26. Service bulletin. ENGINE. TSB: 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.
TSBENG1492017-01-23. Service bulletin. ENGINE. TSB: 2.4 GDI MIL ON WITH DTC(S) P0263/ P0266/ P0269/ P0272 - THIS BULLETIN PROVIDES INFORMATION ABOUT THE REPLACEMENT OF THE FUEL INJECTORS IN SOME SORENTO (XMA) PRODUCED 12/17/2012~12/11/2014, OPTIMA (QF) PRODUCED 07/28/2013~10/02/2015, OPTIMA (TF) PRODUCED 09/09/2013~07/23/2015 2014~2015MY, AND SPORTAGE (SL) PRODUCED 09/01/2013~12/01/2014, WHICH MAY EXHIBIT A MALFUNCTION INDICATOR LAMP (MIL) ON ALONG WITH DTCS P0263, P0266, P0269 AND/OR P0272. FOLLOW THE PROCEDURE OUTLINED IN THIS BULLETIN TO DIAGNOSE AND REPLACE THE AFFECTED INJECTOR TO CORRECT THE CONCERN.
PS-4172015-10-06. Service bulletin. ENGINE. KIA: CRANKSHAFT POSITION SENSOR (CKP) VARIATION HAS NOT LEARNED CAUSING MISFIRE OF ENGINE AND MALFUNCTION INDICATOR LIGHT (MIL) TO COME IN DASH. MODEL ALL. NO YEARS LISTED. *PE
TSB-143REV12014-12-17. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:BELTS AND ASSOCIATED PULLEYS; ENGINE AND ENGINE COOLING:ENGINE; EQUIPMENT. KIA: INFORMATION ON REPLACING CRANKSHAFT PULLEY AND CRANKSHAFT BOLT, ON SOME VEHICLES, THAT ARE EXHIBITING AN OIL LEAK OR HAVE ENGINE NOISES COMING FROM FRONT CRANKSHAFT PULLEY DUE TO EXCESSIVE MATERIAL ON TIP OF CRANKSHAFT. MODEL 2015 OPTIMA, SORENTO. *PE UPDATED 03/27/15 *LJ

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