# Service bulletin SC333\_TSB

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 bulletin
- NHTSA id: 11019471
- Published by NHTSA: 2025\-06\-11
- Manufacturer's number: SC333\_TSB
- Manufacturer's date: 2025\-06\-05
- Campaign id or software version: SC333
- NHTSA component: ENGINE; FUEL/PROPULSION SYSTEM

## NHTSA's summary

VOLUNTARY EMISSIONS SERVICE CAMPAIGN: ENGINE CONTROL MODULE LOGIC IMPROVEMENT \(SC333\) \- This bulletin provides information to upgrade the ‘Engine Control Module’ \(ECM\) system software on certain 2025MY Carnival \(KA4\) vehicles equipped with 3.5L GDI Lambda Ⅲ engines produced from April 15, 2024 through November 27, 2024. The subject vehicles may have been produced with engine calibration that may cause the vehicle to release air pollutants that exceed Federal and California standards and cause the illumination of the Malfunction Indicator Lamp \(MIL\) with DTC P046100. These standards were established to protect the public health and welfare from the dangers of air pollutants.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2025/MC-11019471-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2025/MC-11019471-9999.pdf)

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

## Components

Engine, Fuel system

## Trouble codes named

P0461

## Vehicles listed

- 2025 KIA CARNIVAL

## Recalls for the same vehicles and component

- [2026186](/recalls/tc/2026186.md), 2026-04-10: Fuel System
- [26V232000](/recalls/nhtsa/26V232000.md), 2026-04-10: FUEL SYSTEM, GASOLINE:DELIVERY:HOSES, LINES/PIPING, AND FITTINGS

## Other bulletins for the same vehicles and component

- [TSB\_ELE386](/bulletins/11019906.md), 2025-07-01, Service bulletin: ELECTRICAL SYSTEM; ENGINE. TECHNICAL SERVICE BULLETIN: SERVICE ACTION: MCU DTC LOGIC IMPROVEMENT \(SA617\) \- This bulletin provides information to upgrade the Motor Control Unit ‘MCU’ system software on certain 2025MY Carnival HEV \(KA4 HEV\) vehicles produced from June 27, 2024, through March 19, 2025. The affected vehicles may exhibit an intermittent Malfunction Indicator Lamp ‘MIL’ illuminated on the instrument cluster with DTC P0C7300. The DTC is caused by a software logic error within the Integrated Thermal Management Module ‘ITM’, which controls the coolant flow rate according to the coolant temperature.
- [SC333\_QA](/bulletins/11019730.md), 2025-06-25, Emissions: ENGINE; FUEL/PROPULSION SYSTEM. VOLUNTARY EMISSIONS SERVICE CAMPAIGN: QUESTION AND ANSWER \(SC333\) \- This document is the Question and Answer Guide containing the most frequently asked questions regarding the Voluntary Emissions Service Campaign SC333.
- [OTA\_SA617](/bulletins/11019656.md), 2025-06-19, Over\-the\-air update: ELECTRICAL SYSTEM; ENGINE. RELEASE NOTES: OVER\-THE\-AIR: SERVICE ACTION SOFTWARE UPDATE FOR ELECTRIC WATER PUMP \(SA617\) \- This Over\-the\-Air \(OTA\) software update is designed to update the Motor Control Unit \(MCU\) logic of certain 2025 Carnival vehicles. This update is designed to improve the control logic of the Electric Water Pump to reduce the unintended display of warning lights.
- [SC333\_STKR](/bulletins/11019470.md), 2025-06-11, Emissions: FUEL/PROPULSION SYSTEM; ENGINE. SC333\_STKR: VOLUNTARY EMISSIONS SERVICE CAMPAIGN COMPLETION LABEL/STICKER
- [SC333\_POC](/bulletins/11019469.md), 2025-06-11, Emissions: FUEL/PROPULSION SYSTEM; ENGINE. VOLUNTARY EMISSIONS SERVICE CAMPAIGN: SC333\_POC: PROOF OF CORRECTION CARD
- [SC333\_OWNR](/bulletins/11019468.md), 2025-06-11, Emissions: ENGINE; FUEL/PROPULSION SYSTEM. VOLUNTARY EMISSIONS SERVICE CAMPAIGN: OWNER NOTIFICATION \(SC333\) \- This document is the owner notification advising that Kia is conducting a Voluntary Emissions Service Campaign to improve the emissions software logic in the Electronic Control Module \(ECM\) on certain 2025 MY Carnival vehicles equipped with 3.5L Gas Direct Injection \(GDI\) engines to ensure compliance with emissions regulations.
- [SC333\_DPSM](/bulletins/11019467.md), 2025-06-11, Emissions: ENGINE; FUEL/PROPULSION SYSTEM. VOLUNTARY EMISSIONS SERVICE CAMPAIGN: DEALER PARTS AND SERVICE MANAGER MEMO \(SC333\) \- This document is the announcement to the dealer Parts and Service managers advising that Kia is conducting a Voluntary Emissions Service Campaign on certain 2025 MY Kia Carnival vehicles equipped with 3.5L Gas Direct Injection \(GDI\) engines manufactured from April 15, 2024 to November 27, 2024 to improve the emissions software logic in the Electronic Control Module \(ECM\) to ensure compliance with emissions regulations.
- [SC333\_DP](/bulletins/11019466.md), 2025-06-11, Emissions: FUEL/PROPULSION SYSTEM; ENGINE. VOLUNTARY EMISSIONS SERVICE CAMPAIGN: DEALER PRINCIPAL MEMO \(SC333\) \- This document is the announcement to the dealer principals advising that Kia is conducting a Voluntary Emissions Service Campaign on certain 2025 MY Kia Carnival vehicles equipped with 3.5L Gas Direct Injection \(GDI\) engines manufactured from April 15, 2024 to November 27, 2024 to improve the emissions software logic in the Electronic Control Module \(ECM\) to ensure compliance with emissions regulations.

JSON: [/v1/bulletins/11019471](/v1/bulletins/11019471)

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