TSB: SERVICE ACTION: 3.3 GDI ULEV ECU MIL WITH DTC P0456 LOGIC IMPROVEMENT (SA397) - This bulletin provides the procedure to improve the logic of the Engine Control Module (ECM) on some 2019-2020MY Sedona (YP) 3.3 GDI 8AT ULEV vehicles, produced from February 13, 2018 through August 27, 2019, which may exhibit an ECM MIL ON with DTC P0456.
full bulletin at NHTSA ↗2019 Kia Sedona fuel system problems
severe 3 complaints filed with NHTSA · avg repair $1,200 · see fuel system across all vehicles →
Complaints
3
Recalls
0
Avg fix
$1,200
2injuries
When does it fail?
Of the 3 fuel system complaints filed for the 2019 Kia Sedona, here's the actual mileage breakdown — failures cluster heaviest at 25,000-50,000 mi.
0-25k
25-50k
50-75k
75-100k
100-125k
125-150k
150k+
Each bar shows the share of total complaints filed at that mileage range. Peak failure window highlighted. Some owners report problems earlier; some make it well past 150,000 miles symptom-free. Maintenance habits and driving conditions shift the curve as much as mileage alone.
What stands out
Owners are still filing on this — the most recent NHTSA fuel system complaint for this vehicle was logged 27 days ago.
Is there a fix? Manufacturer service bulletins
The manufacturer has issued service bulletins covering fuel system on this vehicle — documented repair instructions, service campaigns, or warranty extensions sent to dealers. A TSB isn't a recall (it's not a free safety remedy), but it's the manufacturer acknowledging the issue and how to fix it.
Source: NHTSA manufacturer communications. Bring the bulletin number to your dealer or shop.
What owners are reporting 2 most recent
The contact owns a 2019 Kia Sedona. The contact stated that the heat and A/C control knobs had melted twice, and the contact had purchased and personally replaced the entire control panel. Additionally, the contact stated that there was an abnormal strong fuel odor coming from the vehicle. There was no warning light illuminated. The vehicle was taken to the dealer, where it was diagnosed, and the…
The contact owns a 2019 Kia Sedona. The contact stated while driving, he became aware of a strong and unpleasant fuel odor that made him and his granddaughter sick. The contact stated that the check engine warning light flashed on and off several times. The vehicle was taken on several occasions to a local dealer where it was diagnosed with a fuel leak and several parts related to the fuel leak…
Had fuel system trouble with your 2019 Kia Sedona?
File a complaint with NHTSA → It's free, official, and how every report above got here — owner filings are the federal safety record this page is built on.
Common questions
How serious is the fuel system problem on the 2019 Kia Sedona?
It's a meaningful issue. 3 complaints have been filed and the failure mode causes operational problems for owners. Repairs average $1,200.
At what mileage does the fuel system typically fail?
Based on the 3 complaints filed, fuel system issues most often appear around 36,333 miles. Some report problems earlier; some make it well past 150,000 with no symptoms. Maintenance habits matter — vehicles that received timely fluid services and were not regularly overworked tend to last longer.
What does it cost to fix?
Independent shops typically charge around $1,200 for fuel system repairs on this vehicle. Dealer pricing tends to run 20-40% higher. The exact figure depends on the specific failure mode, parts availability, and your local labor rates. If you're outside factory warranty, an extended service contract often covers this category.
Are there any recalls related to fuel system?
No active recalls currently cover fuel system issues on this vehicle. The complaints filed represent owner-reported failures that haven't risen to the level of a manufacturer-issued recall — but they're still worth knowing about before you buy or budget for repairs.
Related
Complaint and recall data sourced from the National Highway Traffic Safety Administration (NHTSA)
public records database. Verify the raw federal record at
nhtsa.gov/vehicle/2019/Kia/Sedona.
Severity ratings are derived from reported crashes, fires, injuries, and fatalities. Repair cost estimates are
independent-shop national averages and may differ in your area. Some links on this page are affiliate links.