Looking for Infiniti QX repair in Phoenix? We work on Infiniti vehicles every day and cover the QX across model years 2011, with honest diagnostics and quotes you approve before work begins.
To help QX owners know what to watch for, we reviewed public records from the National Highway Traffic Safety Administration (NHTSA). For these model years NHTSA has 1 owner complaint on file for the QX and 1 safety recall campaign. The most-reported problem areas are vehicle speed control (1).
Most-Reported Infiniti QX Problems
These problem areas come up most often in NHTSA owner complaints for the QX (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 | |
|---|---|---|---|
| Vehicle Speed Control | 1 | 100% |
Vehicle Speed Control
1 of the 1 complaints (100%) mention vehicle speed control (throttle and cruise control). Speed control complaints involve the throttle, cruise control and related sensors. We scan for stored codes and test the throttle system and sensors to find the actual cause instead of guessing. See our check engine light diagnostics and auto repair pages.
Infiniti QX Check Engine Codes
NHTSA owner complaints rarely cite specific trouble codes for the QX, 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 QX? 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 QX Safety Recalls
NHTSA lists 1 recall campaign for the QX in these model years, most often involving fuel system, gasoline. 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.
- 2012 recall, Fuel System, Gasoline (campaign 12V069000): NISSAN IS RECALLING CERTAIN MODEL YEAR 2011-2012 JUKE, INFINITI QX AND INFINITI M VEHICLES. THE FUEL PRESSURE SENSORS MAY NOT HAVE BEEN TIGHTENED TO THE CORRECT SPECIFICATION.
Keeping a Infiniti QX 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 QX 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 QX 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 QX, a pre-purchase inspection shows what the paperwork does not.
Infiniti QX Services at EZ Swap LLC
Get the details on our Phoenix Infiniti QX repair service, or choose a service below.
Check Engine Light Diagnostics
Scan, test and pinpoint the real cause.
Details →Auto Repair
All makes and models, from domestic trucks to imports.
Details →Oil Change & Maintenance
Oil, filters, fluids, tires and scheduled service.
Details →Car A/C Repair
Phoenix heat demands cold air.
Details →Pre-Purchase Inspection
Know the car before you buy it.
Details →Rideshare Inspection Prep
Get approved for Uber, Lyft and more.
Details →Infiniti QX FAQ
What are the most common problems with the Infiniti QX?
Based on NHTSA owner complaints, the most-reported problem areas for the Infiniti QX are vehicle speed control (1). Complaint counts reflect reports filed, not the share of vehicles affected.
Which QX model years have the most complaints?
The QX model years with the most NHTSA complaints on file are 2011. Older years have had longer to collect reports, so inspect any specific vehicle before buying.
What check engine codes are common on the Infiniti QX?
NHTSA complaints rarely cite specific codes for the Infiniti QX. 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 QX have any safety recalls?
NHTSA lists 1 recall campaign for the Infiniti QX across model years 2011. 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 QX in Phoenix?
Yes. EZ Swap LLC repairs and maintains Infiniti vehicles including the QX, 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 QX?
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 QX 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.