Service bulletin WTY028_TSB_R1

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
Type	Service bulletin
NHTSA id	10225574
Published by NHTSA	2022-11-02
Manufacturer's number	WTY028_TSB_R1
Manufacturer's date	2022-10-31
NHTSA component	FUEL SYSTEM, GASOLINE

NHTSA's summary

TECHNICAL SERVICE BULLETIN: FUEL PUMP FILTER INSPECTION/REPLACEMENT - 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 associated with the 'Warranty Extension Program' (WTY028) to inspect and, if necessary, replace the fuel pump filter assembly on 2016-2020MY Optima (JFa) vehicles produced from August 28, 2015 through June 23, 2020, for repairs that may be necessary to address a low-pressure fuel pump failure to be covered for 15 years / 150,000 miles, whichever comes first starting from the date the vehicle was first put into service. The affected vehicles may exhibit an intermittent reduction in engine power, contain an active or stored DTC P1233 and/or exhibit a 'No Start' condition due to a cracked fuel pump filter housing.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Fuel system

Trouble codes named

P1233

Vehicles listed
KIA OPTIMA	2016, 2017, 2018, 2019, 2020

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Recalls for the same vehicles and component
2019098	2019-02-27. Fuel System
18V907000	2018-12-19. ENGINE; FUEL SYSTEM, GASOLINE:DELIVERY:HOSES, LINES/PIPING, AND FITTINGS

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
SC269_OWNR_401	2026-07-21. Service campaign. VOLUNTARY SERVICE CAMPAIGN: OWNER RENOTIFICATION (SC269 FLIGHT #401) - This document is the owner renotification advising that Kia is conducting a Voluntary Service Campaign to inspect and, if necessary, replace the high-voltage fuse in 2013-2016 MY Optima Hybrid vehicles.
SC269_OWNR_301	2025-03-26. Service campaign. VOLUNTARY SERVICE CAMPAIGN: OWNER RENOTIFICATION (SC269) - This document is the owner renotification advising that Kia conducting a Voluntary Service Campaign to inspect and, if necessary, replace the high-voltage fuse in 2013-2016 MY Optima Hybrid vehicles.
TSB_ELE273	2023-02-02. Service bulletin. TECHNICAL SERVICE BULLETIN: HIGH-VOLTAGE BATTERY SAFETY PLUG FUSE INSPECTION AND REPLACEMENT - This bulletin provides information associated with the "Hybrid System Warranty Extension Program" (WTY029) to inspect and, if necessary, replace the High Voltage Battery (HVB) Safety Plug Fuse Assembly or Main Fuse on 2013-2016MY Optima Hybrid (TF HEV) vehicles produced from September 27, 2012 through July 22, 2015.
WTY028_TSB	2022-11-02. Service bulletin. TECHNICAL SERVICE BULLETIN: FUEL PUMP FILTER INSPECTION/REPLACEMENT - This bulletin provides information associated with the 'Warranty Extension Program' (WTY028) to inspect and, if necessary, replace the fuel pump filter assembly on 2016-2020MY Optima (JFa) vehicles produced from August 28, 2015 through June 23, 2020, for repairs that may be necessary to address a low-pressure fuel pump failure to be covered for 15 years / 150,000 miles, whichever comes first starting from the date the vehicle was first put into service. The affected vehicles may exhibit an intermittent reduction in engine power, contain an active or stored DTC P1233 and/or exhibit a 'No Start' condition due to a cracked fuel pump filter housing.
WTY029_OWNR	2022-10-05. Service bulletin. WARRANTY EXTENSION: OWNER NOTIFICATION - This document is the owner notification advising that Kia is extending the Hybrid System Warranty coverage for the high-voltage battery safety plug fuse in 2013-2016 MY Optima Hybrid vehicles from 10 years / 100,000 miles to 15 years / 150,000 miles, whichever comes first, starting from the date the vehicle was first put into service. This warranty extension addresses, at no cost to you, certain concerns related to the potential failure of the high-voltage battery safety plug fuse.
WTY029_REIMB	2022-10-05. Service bulletin. WARRANTY EXTENSION: REIMBURSEMENT FORM - This document is a Reimbursement Request form that was mailed with the customer letter advising them to submit the form if they had paid for repairs for this same matter prior to the warranty extension program launch.
WTY029_QA	2022-10-05. Service bulletin. WARRANTY EXTENSION: QUESTION AND ANSWER - This document is the Question and Answer Guide containing the most frequently asked questions regarding the warranty extension (WTY029).
WTY029_DPSM	2022-10-05. Service bulletin. WARRANTY EXTENSION: DEALER PARTS AND SERVICE MANAGER MEMO - This document is the announcement to the dealer Parts and Service Managers that Kia America, Inc., is extending the Hybrid System Warranty coverage for the high-voltage battery safety plug fuse in 2013-2016 MY Optima Hybrid vehicles from 10 years / 100,000 miles to 15 years / 150,000 miles, whichever comes first, starting from the date the vehicle was first put into service. This warranty extension is to address certain concerns related to the potential failure of the high-voltage battery safety plug fuse.
WTY029_DP	2022-10-05. Service bulletin. WARRANTY EXTENSION: DEALER PRINCIPAL MEMO - This document is the announcement to the dealer principals that Kia America, Inc., is extending the Hybrid System Warranty coverage for the high-voltage battery safety plug fuse in 2013-2016 MY Optima Hybrid vehicles from 10 years / 100,000 miles to 15 years / 150,000 miles, whichever comes first, starting from the date the vehicle was first put into service. This warranty extension is to address certain concerns related to the potential failure of the high-voltage battery safety plug fuse.
WTY028_REIMB	2022-08-03. Service bulletin. WARRANTY EXTENSION: REIMBURSEMENT FORM - This document is a Reimbursement Request form that was mailed with the customer letter advising them to submit the form if they had paid for repairs for this same matter prior to the warranty extension program launch.