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Service bulletin 24-EM-010H

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 id11012045
Published by NHTSA2024-12-21
Manufacturer's number24-EM-010H
Manufacturer's date2024-12-19
Campaign id or software version24-EM-010H
NHTSA componentENGINE
Manufacturer's systemENGINE MECHANICAL

NHTSA's summary

Certain Elantra N (CN7 N), Kona N (OS N), and Veloster N (JS N) vehicles may have DTC P1326 set due to water intrusion in the knock sensor connector during heavy rain or car wash conditions. There is no abnormal engine noise present, and the vehicle may enter “limp home” mode.

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

Engine

Trouble codes named

P1326

Vehicles listed
HYUNDAI ELANTRA N2022, 2023, 2024
HYUNDAI KONA N2022, 2023
HYUNDAI VELOSTER N2019, 2020, 2021, 2022

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
26-EM-016H TSB2026-10-14. Service bulletin. Some vehicles equipped with internal combustion engines may exhibit higher-than-expected engine oil consumption. This bulletin outlines the combustion chamber cleaning procedure for vehicles diagnosed with this condition. All internal combustion engines consume some engine oil during normal operation, depending on driving conditions and mileage, and this procedure should only be performed when deemed necessary based on inspection and diagnosis of the vehicle as outlined in TSB 26-EM-015H, Engine Oil Consumption – Inspection & Repair Guidelines, or the latest revision.
26-EM-015H TSB2026-10-13. Service bulletin. Certain vehicles equipped with internal combustion engines may exhibit higher-than-expected engine oil consumption. This bulletin provides the inspection and repair procedures for vehicles exhibiting this condition. All internal combustion engines consume engine oil as part of normal engine operation. Oil consumption rates may vary based on mileage, operating conditions, driving habits, and maintenance history. Hyundai recommends following the prescribed maintenance schedule and periodically checking the engine oil level using the dipstick to maintain proper engine oil level.
25-EM-004H TSB2025-06-24. Service bulletin. Certain Elantra N (CN7 N) vehicles may experience a rattle and/or buzzing sound coming from the rear muffler assembly at idle or on deceleration. Follow the service procedure below to replace the spring located in the active valve exhaust system to resolve the concern.
24-FL-006H TSB2024-11-05. Service bulletin. Certain vehicles equipped with a 2.0L T-GDI Theta II engine may exhibit one or more misfire DTCs due to the injectors leaking internally. This may be caused by internal filter breakage in the injector. Follow the procedure in this TSB to replace all 4 injectors on affected vehicles, using the kit in the Parts Information section.
23-EM-005H2023-12-15. Service bulletin. This bulletin provides important checkpoint guidelines when performing engine oil and filter change services.