Own a Infiniti QX55 in the Phoenix area? EZ Swap LLC repairs and maintains the Infiniti QX55 for model years 2022 to 2025. Our shop at 9050 N 9th St handles everything from routine service to diagnostics and major repairs.
To help QX55 owners know what to watch for, we reviewed public records from the National Highway Traffic Safety Administration (NHTSA). For these model years NHTSA has 14 owner complaints on file for the QX55 and 2 safety recall campaigns. The most-reported problem areas are engine (7), power train (2), seats (2).
Most-Reported Infiniti QX55 Problems
These problem areas come up most often in NHTSA owner complaints for the QX55 (all model years combined). Complaint counts reflect reports filed, not the share of vehicles affected, so popular and older models naturally have more.
| Problem area (NHTSA component) | Complaints | Share | |
|---|---|---|---|
| Engine | 7 | 50% | |
| Power Train | 2 | 14% | |
| Seats | 2 | 14% | |
| Air Bags | 1 | 7% | |
| Structure | 1 | 7% | |
| Fuel/Propulsion System | 1 | 7% | |
| Forward Collision Avoidance | 1 | 7% | |
| Engine And Engine Cooling | 1 | 7% |
Engine
7 of the 14 complaints (50%) mention the engine and cooling system. Engine and cooling complaints are best caught early in Phoenix, where heat pushes cooling systems and engine oil to their limits. We diagnose warning lights and check coolant, hoses and oil condition. See our check engine light diagnostics and oil change & maintenance pages.
Power Train
2 of the 14 complaints (14%) mention the powertrain. Powertrain complaints can range from rough shifting to loss of drive. We road test, scan for stored codes and inspect fluids before recommending any repair. See our auto repair page.
Seats
2 of the 14 complaints (14%) mention seats and head restraints. Seat and restraint complaints are often covered by safety recalls, which the manufacturer repairs at no charge. Check your VIN first, and we can inspect seat hardware and related warning lights. See our auto repair page.
Infiniti QX55 Complaints by Model Year
The QX55 model years with the most NHTSA complaints on file are 2022, 2023. Older model years have had more time to collect reports, so use this table as a guide for what to inspect, not as a verdict on any one vehicle.
| Model year | Complaints on file | |
|---|---|---|
| 2022 | 10 | |
| 2023 | 4 |
Infiniti QX55 Check Engine Codes
NHTSA owner complaints rarely cite specific trouble codes for the QX55, so we do not have a model-specific ranking to show. These are the check engine codes we see most often on vehicles in Phoenix heat, and any of them can show up on a Infiniti.
| Code | What it means |
|---|---|
| P0420 | Catalyst efficiency below threshold (bank 1) Often a worn catalytic converter, but failing oxygen sensors or exhaust leaks can set it too. Can cause an emissions test failure. |
| P0300 | Random or multiple cylinder misfire Worn spark plugs, failing ignition coils, fuel or vacuum problems. Do not ignore a flashing check engine light. |
| P0171 | System too lean (bank 1) Often a vacuum leak, dirty MAF sensor, weak fuel delivery or a failing oxygen sensor. |
| P0455 | EVAP system large leak Missing or loose gas cap, or a disconnected or cracked vapor hose. |
| P0128 | Coolant temperature below thermostat regulating temperature Usually a thermostat stuck open. Fix it to restore efficiency and cabin heat. |
| P0442 | EVAP system small leak Loose or worn gas cap, cracked hose or purge or vent valve. |
| P0301 | Cylinder 1 misfire Commonly a bad spark plug or ignition coil on that cylinder. |
| P0401 | EGR flow insufficient Clogged EGR passages or a stuck EGR valve. |
Got a check engine light on your QX55? A code is a clue, not a diagnosis, so we scan it and test the system before replacing anything. See our check engine light diagnostics.
Infiniti QX55 Safety Recalls
NHTSA lists 2 recall campaigns for the QX55 in these model years, most often involving engine and engine cooling, latches/locks/linkages. Recalls are repaired by the manufacturer at no charge to you, but each applies only to certain vehicles. Look up your VIN at nhtsa.gov/recalls.
- 2025 recall, Engine And Engine Cooling (campaign 25V437000): Nissan North America, Inc. (Nissan) is recalling certain 2021-2024 Rogue, 2019-2020 Altima, 2019-2022 Infiniti QX50, and 2022 Infiniti QX55 vehicles equipped with 3-cylinder 1.5L or 4-cylinder 2.0L variable compression turbo (VC-Turbo)...
- 2023 recall, Latches/Locks/Linkages (campaign 23V187000): Nissan North America, Inc. (Nissan) is recalling certain 2023 INFINITI QX55 and 2022 INFINITI QX50 vehicles.
Keeping a Infiniti QX55 Reliable in Phoenix
Arizona heat is the hardest test a Infiniti will face. Batteries, belts, hoses, tires and engine oil all wear faster here, and a QX55 that spends its life in stop-and-go Valley traffic needs maintenance earlier than the owner's manual's normal schedule suggests.
Our recommendation for QX55 owners: follow the severe-service schedule, test the battery before every summer, inspect brakes and tires twice a year, and have any warning light diagnosed instead of ignored. If you are shopping for a used Infiniti QX55, a pre-purchase inspection shows what the paperwork does not.
Infiniti QX55 Services at EZ Swap LLC
Get the details on our Phoenix Infiniti QX55 repair service, or choose a service below.
Infiniti QX55 FAQ
What are the most common problems with the Infiniti QX55?
Based on NHTSA owner complaints, the most-reported problem areas for the Infiniti QX55 are engine (7), power train (2), seats (2). Complaint counts reflect reports filed, not the share of vehicles affected.
Which QX55 model years have the most complaints?
The QX55 model years with the most NHTSA complaints on file are 2022, 2023. Older years have had longer to collect reports, so inspect any specific vehicle before buying.
What check engine codes are common on the Infiniti QX55?
NHTSA complaints rarely cite specific codes for the Infiniti QX55. On Phoenix vehicles in general, we see P0420, P0300 misfires, P0171 lean conditions and EVAP leaks such as P0455 and P0442 most often. Bring yours in and we will scan and test it.
Does the Infiniti QX55 have any safety recalls?
NHTSA lists 2 recall campaigns for the Infiniti QX55 across model years 2022 to 2025. Each recall applies only to certain vehicles, so enter your VIN at nhtsa.gov/recalls to see if yours is affected.
Do you repair the Infiniti QX55 in Phoenix?
Yes. EZ Swap LLC repairs and maintains Infiniti vehicles including the QX55, at 9050 N 9th St in Phoenix. Call or text (602) 246-9063 for an appointment.
Is a pre-purchase inspection worth it for a used Infiniti QX55?
Yes. An inspection checks the engine, transmission, brakes, suspension, A/C and electrical system, and scans for stored codes, so you know the real condition before you buy.
How often should I service my Infiniti QX55 in Phoenix?
Follow the severe-service schedule in your owner's manual, since heat and stop-and-go driving count as severe use. Test the battery before summer and inspect brakes and tires regularly.
More Infiniti Models We Service
Source: public complaint and recall records from the National Highway Traffic Safety Administration (nhtsa.gov). Counts reflect reports filed and do not predict the condition of any individual vehicle.