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Service bulletin PI1802WX_TSB_R7

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)
TypeService bulletin
NHTSA id10170766
Published by NHTSA2020-02-03
Manufacturer's numberPI1802WX_TSB_R7
Manufacturer's date2020-01-15
NHTSA componentENGINE AND ENGINE COOLING; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; ELECTRICAL SYSTEM:WIRING

NHTSA's summary

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.

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

Electrical system, Engine, Equipment and accessories, Labels and manuals, Wiring and fuses

Trouble codes named

P1326

Vehicles listed
KIA OPTIMA2014, 2015, 2016, 2017, 2018
KIA SORENTO2015, 2016, 2017, 2018
KIA SPORTAGE2014, 2015, 2016, 2017, 2018

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

Other bulletins for the same vehicles and component
WTY031_TSB2023-06-01. Service bulletin. TECHNICAL SERVICE BULLETIN: MULTIFUNCTION SWITCH REPAIR - This bulletin provides information associated with the 'Multifunction Switch Warranty Extension Program' (WTY031) to repair the multifunction switch knob on 2016-2018MY Sorento (UMa) vehicles, produced at Kia Georgia from October 27, 2014 through March 7, 2018, which may exhibit an intermittent headlamp flickering. The vehicle’s warranty for this issue will be extended from 5 years/60,000 miles to 15 years/150,000 miles, whichever comes first, starting from the date the vehicle was first put into service.
TSBELE1632019-06-04. Service bulletin. TSB: PARASITIC DRAW INSPECTION AND REAR DOOR LATCH REPLACEMENT - This bulletin provides the procedure to inspect for a parasitic draw and, if necessary, replace one or both rear door latches on some of the following vehicles which may experience a discharged 12v battery.
PS5242017-11-14. Service bulletin. PITSTOP - OPTIMA TRUNK TORSION BAR ADJUSTMENT - On some 2016-2018MY Optima (JFa) vehicles, there may be a concern with the trunk not opening as designed when using transmitter key fob or Smart Trunk feature. This may be caused by improper assembly of the trunk torsion bar (A) and trunk lid hinge. Follow the procedure in this publication to correct this concern.
TSBELE126R12017-08-25. Service bulletin. TSB: SERVICE ACTION: REAR PERSONAL LAMP REPAIR (SA273) - This bulletin provides information related to the rear personal lamp on some 2016MY Optima (JFa) vehicles, produced from September 11, 2015 to August 13, 2016, which may experience a blown Interior Lamp 10A fuse resulting in inoperative interior lamps. Follow the procedure outlined in this bulletin to increase the bulb circuit and the bulb reflector clearances to prevent internal shorting of the lamp assembly resulting in a blown Interior Lamp 10A fuse, and if necessary, replace the Interior Lamp 10A fuse. Replace the lamp only if housing deformation is noticed during the repair procedure.