Kia bulletin SC325
Kia filed this with NHTSA as a emissions communication dated Feb 20, 2026, received Feb 5, 2025, about the engine — 10 documents under this number: SC325_TSB_R1, SC325_TSB, SC325_STKR, SC325_POC and more. It names 5 model years (2022–2023). A emissions communication is not a safety recall — there is no NHTSA campaign number and no federal requirement — but it is usually work the manufacturer pays for on the vehicles it names; the dealer checks the VIN against the manufacturer’s list.
What the bulletin says
Source: NHTSA's summary of the manufacturer's communicationTECHNICAL SERVICE BULLETIN: VOLUNTARY EMISSIONS SERVICE CAMPAIGN: AEWP INSPECTION AND REPLACEMENT (SC325) - 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 to inspect and, if necessary, replace the Auxiliary Electric Water Pump (AEWP), control harness wiring, and/or engine room junction box for coolant intrusion and/or corrosion on certain 2022-2023MY Kia Hybrid and Plug-in Hybrid vehicles listed in the table below. The AEWP in the subject vehicles may crack internally and allow coolant to intrude into the AEWP circuitry. If coolant enters the AEWP circuitry, the Check Engine Light (CEL) may be illuminated with one or more DTCs listed on page 2. If the vehicle continues to be driven in this condition, the Active Air Flap (AAF) warning message can also activate, and coolant may eventually migrate through the wiring harness to the engine room junction block. This may result in a reduction of motive power and may cause the vehicle to release air pollutants which exceeds Federal and California standards. These standards were established to protect the public health and welfare from the dangers of air pollution.
Documents filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| SC325_TSB_R1 | Service bulletin | Feb 20, 2026 | 11029043 | not yet checked |
| SC325_TSB | Service bulletin | Feb 7, 2025 | 11014236 | not yet checked |
| SC325_STKR | Emissions | Feb 6, 2025 | 11013791 | not yet checked |
| SC325_POC | Emissions | Feb 6, 2025 | 11013786 | not yet checked |
| SC325_OWNR_SG2 | Emissions | Feb 6, 2025 | 11013785 | not yet checked |
| SC325_OWNR_NQ5 | Emissions | Feb 6, 2025 | 11013780 | not yet checked |
| SC325_OWNR_MQ4 | Emissions | Feb 6, 2025 | 11013779 | not yet checked |
| SC325_QA | Emissions | Feb 4, 2025 | 11013789 | not yet checked |
| SC325_DPSM | Emissions | Feb 4, 2025 | 11013772 | not yet checked |
| SC325_DP | Emissions | Feb 4, 2025 | 11013770 | not yet checked |
The summary is NHTSA’s abstract of the document, as filed under 49 CFR 579.5. One communication is usually filed as several documents — the bulletin, a dealer notice, an owner letter — and the number on any of them finds this page. A PDF link is shown only once NHTSA’s own server has been seen to serve that document; the rest are checked over the following nights. Quote the number at a service desk; it is what the dealer’s system is keyed on.
Model years it names
Source: as the manufacturer filed themA vehicle page’s bulletin list shows the newest few communications filed against that model year; the count there is every one.
Common questions
Source: NHTSA, 49 CFR 579.5Is Kia SC325 a recall?
No. A emissions communication is a manufacturer communication filed with NHTSA under 49 CFR 579.5; a safety recall carries an NHTSA campaign number (two digits, a letter, six digits) and a federal duty to repair for free. Check the vehicle’s recalls by VIN at nhtsa.gov/recalls, or on its page here.
Is the SC325 repair free?
A emissions communication is usually paid by the manufacturer on the vehicles it names, within the terms and time limit the document sets; the dealer checks the VIN against the manufacturer’s list.
Which vehicles does SC325 cover?
The manufacturer filed it against 5 model years: 2023 Kia Niro, 2022 Kia Niro, 2023 Kia Sorento, 2022 Kia Sorento, 2023 Kia Sportage. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.