# Service campaign 25\-01\-087H DN

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.

- Type: Service campaign
- NHTSA id: 11025964
- Published by NHTSA: 2025\-12\-02
- Manufacturer's number: 25\-01\-087H DN
- Manufacturer's date: 2025\-11\-26
- Campaign id or software version: 9C2
- NHTSA component: ENGINE

## NHTSA's summary

Certain Santa Fe \(TMA\), Sonata \(LFA\) and Tucson \(TL\) vehicles equipped with Theta II engines may exhibit elevated engine\-out emissions.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2025/MC-11025964-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2025/MC-11025964-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Engine

## Vehicles listed

- 2019 to 2020 HYUNDAI SANTA FE
- 2019 HYUNDAI SONATA
- 2019 to 2021 HYUNDAI TUCSON

## Recalls for the same vehicles and component

- [2022244](/recalls/tc/2022244.md), 2022-05-08: Engine
- [2021575](/recalls/tc/2021575.md), 2021-09-17: Engine
- [2019640](/recalls/tc/2019640.md), 2019-12-16: Engine

## Other bulletins for the same vehicles and component

- [26\-EM\-016H TSB](/bulletins/11038458.md), 2026-10-14, Service bulletin: ENGINE. 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 TSB](/bulletins/11038456.md), 2026-10-13, Service bulletin: ENGINE. 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.
- [26\-EM\-014H TSB](/bulletins/11037434.md), 2026-09-22, Service bulletin: ENGINE; ELECTRICAL SYSTEM. Some Tucson \(TL\) vehicles equipped with a 2.0L engine may exhibit a continued DTC P132600 after an ECM logic update has been performed per TSB 24\-01\-068H, Engine Monitoring Logic \(Service Campaign 966\). This bulletin provides instructions to inspect and resolve other engine mechanical issues and if DTC P132600 remains, then a procedure and manual mode passwords are given to perform the update again in manual mode to resolve this condition.
- [9C2 060518](/bulletins/11033705.md), 2026-06-06, Service campaign: ENGINE; ELECTRICAL SYSTEM. Following completion of Service Campaign 9C2 \(Theta II Emissions Improvement\), certain vehicles may exhibit a brief hesitation or rough shifting condition during cold start operation. If present, this condition is expected to occur only within approximately the first 1\-3 minutes after engine start, while the catalyst is reaching its normal operating temperature.
- [9C2 DCS 260518](/bulletins/11033701.md), 2026-06-06, Service campaign: ELECTRICAL SYSTEM; ENGINE. Following completion of Service Campaign 9C2 \(Theta II Emissions Improvement\), certain vehicles may exhibit a brief hesitation or rough shifting condition during cold start operation. If present, this condition is expected to occur only within approximately the first 1\-3 minutes after engine start, while the catalyst is reaching its normal operating temperature.
- [26\-01\-013H\-2 DN](/bulletins/11033700.md), 2026-06-06, Service campaign: ELECTRICAL SYSTEM; ENGINE. Certain Santa Fe \(TMA\), Santa Fe Sport \(AN\), Sonata \(LFA\), and Tucson \(TL\) vehicles equipped with Theta II engines may exhibit elevated engine\-out emissions. The California Air Resources Board has determined that these vehicles may be releasing air pollutants which exceed Federal and California standards.
- [26\-01\-013H\-2 TSB](/bulletins/11033699.md), 2026-06-06, Service campaign: ENGINE; ELECTRICAL SYSTEM. Certain Santa Fe \(TMA\), Santa Fe Sport \(AN\), Sonata \(LFA\), and Tucson \(TL\) vehicles equipped with Theta II engines may exhibit elevated engine\-out emissions. This bulletin provides instructions for updating the Engine Control Module \(ECM\) to address this condition.
- [9C2 OL](/bulletins/11031416.md), 2026-04-22, Service campaign: ENGINE. Certain 2019 – 2020 model year Santa Fe, 2017 – 2018 model year Santa Fe Sport, 2015 – 2019 model year Sonata, and 2018 – 2021 model year Tucson vehicles may exhibit elevated engine\-out emissions. Hyundai is conducting a service campaign to update the Engine Control Module \(ECM\) Software for vehicles equipped with the \(2.4 GDI\) Theta II engine to improve engine combustion and fuel trim adaptations.
- [26\-EE\-003H TSB](/bulletins/11031400.md), 2026-04-21, Service bulletin: ENGINE; ELECTRICAL SYSTEM. Some vehicles may exhibit difficulty starting in cold weather. This bulletin provides the procedure to perform an inspection on the starter magnetic switch for potential freezing and, if necessary, replace the starter magnetic switch \(solenoid\) assembly.
- [9C2 Susp DCS](/bulletins/11030625.md), 2026-04-02, Service campaign: ENGINE. Hyundai Motor America is currently investigating an ongoing issue with software GDS event \#1383 related to 2015MY Sonata \(LFA\) 2.4L vehicles. The matter is currently being investigated for a resolution as soon as possible. The impacted vehicles related to this event will not show open on the VIN in WebDCS while this event is under suspension.

JSON: [/v1/bulletins/11025964](/v1/bulletins/11025964)

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