EVAP LEAK DTC P0442, P0455, P0456 INFORMATION This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
full bulletin at NHTSA ↗2014 INFINITI QX80 fuel system problems
moderate 4 complaints filed with NHTSA · avg repair $1,200 · see fuel system across all vehicles →
Complaints
4
Recalls
0
Avg fix
$1,200
When does it fail?
Of the 4 fuel system complaints filed for the 2014 INFINITI QX80, here's the actual mileage breakdown — failures cluster heaviest at 100,000-125,000 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
Fuel system accounts for 20% of all owner complaints filed against this vehicle, across 3 categories tracked.
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.
INFINITI; DTC P0456 CAUSED BY EVAP LEAK AT VENT CONTROL VALVE O-RING This bulletin has been amended. See Amendment History on the last page. Please discard previous versions of this bulletin.
full bulletin at NHTSA ↗INFINITI; FUEL TANK IS EXTREMELY DIFFICULT TO FILL The update below was sent out to Regions and Retailers in August of this year. We are re-circulating this update to make regional and retailer personnel aware that we are re-notifying clients at this time.
full bulletin at NHTSA ↗INFINITI; FUEL TANK IS EXTREMELY DIFFICULT TO FILL This bulletin has been amended. Changes have been made throughout. It is necessary for you to read this revised procedure to properly perform this action. Please discard previous versions of this bulletin.
full bulletin at NHTSA ↗INFINITI; FUEL TANK IS EXTREMELY DIFFICULT TO FILL IF CUSTOMER REPORTS: Customer routinely experiences difficulty fueling the vehicle at different fuel stations (filling nozzle shuts off every few seconds while filling at multiple stations and using multiple filling pumps). IMPORTANT: - If the customer does not report the above symptoms, this bulletin does not apply. - If the customer reports intermittent (but not consistent difficulty re-fueling), this bulletin does not apply. ACTION: Perform the Inspection Procedure in this bulletin, starting on page 4, only if the customer reports symptoms as described above. NOTE: Refer to the Repair Overview on page 2.
full bulletin at NHTSA ↗Source: NHTSA manufacturer communications. Bring the bulletin number to your dealer or shop.
What owners are reporting 4 most recent
The contact owns a 2014 Infiniti QX80. The contact stated that while driving 55-60 MPH, the service engine light illuminated. The vehicle was taken to a non-Infiniti dealer, where it was diagnosed that the high-pressure fuel pump had failed. The vehicle was repaired. The contact stated that the failure persisted. Most recently, the vehicle was vibrating abnormally. The vehicle was taken back to…
Tl* the contact owns a 2014 Infiniti qx80. The contact received a notice for NHTSA campaign number: 14v683000 (fuel system); however, the part needed to do the repair was not available. The contact believed the manufacturer exceeded a reasonable amount of time. The manufacturer was made aware of the situation. The contact had not experienced the failure. Updated 7/14/15*cn the consumer stated…
The contact owns a 2014 Infiniti QX80. The contact stated that there was a strong fuel odor coming from the vehicle while the vehicle was parked. The contact stated that the odor was present in the garage and in her residence. There was no warning light illuminated. The dealer was notified of the failure and informed the contact that the VIN was not included in a recall. The vehicle was not…
2014 Infiniti qx80. Consumer writes in regards to fuel smell in vehicle and received recall notice. *smd the consumer was informed, the part was not available. *jb
Had fuel system trouble with your 2014 INFINITI QX80?
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 2014 INFINITI QX80?
It's a documented issue but not catastrophic. 4 complaints have been filed. Repairs average $1,200 and most owners catch it before it causes a breakdown.
At what mileage does the fuel system typically fail?
Based on the 4 complaints filed, fuel system issues most often appear around 105,000 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/2014/INFINITI/QX80.
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.