Infiniti QX60 Common Problems & Reliability Guide
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Overview
The Infiniti QX60 is a three-row luxury midsize SUV sold in the US since 2014, offering a blend of premium features and practical family utility. Built on Nissan's D platform and sharing its foundation with the Nissan Pathfinder, the QX60 uses a 3.5L V6 engine paired with a CVT transmission in its first generation, before switching to a conventional 9-speed automatic in the redesigned second generation. While the QX60 earns praise for its ride comfort, interior quality, and passenger space, owners should be aware of CVT reliability concerns in early models, timing chain issues, and technology-related problems. Understanding the most common OBD2 codes and known failure points by generation helps owners anticipate repairs and budget accordingly.
Quick Summary
By Generation
Available Engines
Common OBD2 Codes
| Code | Frequency | Notes |
|---|---|---|
| P0420 | Very Common | Catalytic converter efficiency below threshold on bank 1. Very common in first-gen QX60s with over 80,000 miles. The VQ35DE engine can run slightly rich under certain conditions, accelerating converter degradation. OEM replacement converters are expensive; confirm actual converter failure with an upstream/downstream O2 sensor comparison before replacing. |
| P0430 | Very Common | Bank 2 catalytic converter efficiency below threshold. Almost always appears alongside P0420 since both converters age at similar rates. Replacement of both converters at the same time is typically recommended. |
| P0300 | Common | Random/multiple cylinder misfire detected. Often caused by worn spark plugs (due at 105,000 miles per schedule), faulty ignition coils, or minor vacuum leaks. Timing chain stretch can also trigger this code in higher-mileage examples. |
| P0171 | Common | System too lean, bank 1. Frequently caused by vacuum leaks at intake manifold gaskets, a dirty or failing mass airflow sensor, or a clogged fuel injector. Also appears with a partially plugged fuel filter or weak fuel pump on high-mileage vehicles. |
| P0174 | Common | System too lean, bank 2. Typically found alongside P0171 and shares the same root causes. Both codes together usually point to a MAF sensor issue or bilateral intake leak rather than individual injector or O2 sensor failure. |
| P0340 | Common | Camshaft position sensor circuit malfunction, bank 1. The VQ35DE engine uses four camshaft sensors; circuit faults on the Bank 1 intake sensor are the most frequently reported. Can be caused by sensor failure, worn reluctor ring, or timing chain stretch affecting camshaft signal timing. |
| P0345 | Common | Camshaft position sensor circuit malfunction, bank 2 intake. Often found together with P0340 when timing chain wear is the underlying cause, as both banks are affected when the chain stretches. |
| P0335 | Occasional | Crankshaft position sensor circuit malfunction. Can be triggered by the sensor itself failing or by timing chain wear causing irregular crankshaft signal patterns. If accompanied by P0340/P0345, inspect the timing chain system thoroughly. |
| P0868 | Occasional | Transmission fluid pressure low. Seen in CVT-equipped models with aging fluid or a beginning CVT failure. Low line pressure in the CVT can indicate fluid degradation (interval is 60,000 miles recommended), valve body wear, or early pump failure. Act on this code promptly — CVT repairs are expensive. |
| P0740 | Occasional | Torque converter clutch solenoid circuit malfunction. In CVT-equipped QX60s this maps to the forward clutch control circuit. Often a precursor to broader CVT failure. Inspect CVT fluid condition and level; internal contamination (dark, burnt fluid) may indicate imminent transmission failure. |
| P0455 | Occasional | EVAP system large leak detected. Commonly a loose or cracked gas cap in the QX60, but can also stem from a failed purge control solenoid or cracked charcoal canister hose. Rule out the gas cap first before further diagnosis. |
| P0128 | Occasional | Coolant temperature below thermostat regulating temperature. Indicates a failed-open thermostat, which reduces fuel efficiency, prevents the cabin heater from reaching full temperature, and can accelerate engine wear. Thermostat replacement is straightforward and inexpensive. |
Known Problems
The Jatco JF016E CVT used in 2014-2021 QX60 models is the most significant reliability concern for this generation. Owners report shuddering during light acceleration, hesitation when pulling away from a stop, and sudden complete failure. The CVT is sensitive to fluid quality — Nissan NS-2 or NS-3 fluid changes every 60,000 miles are critical. Many failures occur between 80,000-130,000 miles. Extended warranty coverage under Nissan's CVT warranty (varies by model year) may apply; check NHTSA complaint records for your specific year. Full CVT replacement is the primary repair option.
Typical mileage: 80,000-130,000 miles
Shop parts for this repairThe VQ35DE V6 in the QX60 is known to develop timing chain stretch, particularly when oil change intervals are neglected or when low-viscosity oil is used. A rattling noise on cold start (usually from the driver's side of the engine) is the most common symptom. If ignored, a stretched chain can cause camshaft and crankshaft position sensor codes, rough running, and in severe cases chain jump or engine damage. Timing chain replacement involves significant labor and is best addressed proactively once symptoms appear.
Typical mileage: 70,000-120,000 miles
Shop parts for this repairBoth bank 1 and bank 2 catalytic converters on the VQ35DE commonly degrade after 80,000-100,000 miles, triggering check engine lights and failed emissions tests. Contributing factors include the engine's tendency to run slightly rich under load and the converters' position in the exhaust system. OEM Infiniti converters are expensive; many owners use CARB-compliant or 49-state aftermarket alternatives. Confirm converter failure with a professional scan before purchase — a failed downstream O2 sensor can mimic converter failure codes.
Typical mileage: 80,000-110,000 miles
Shop parts for this repairThe MAF sensor in the QX60 is prone to contamination and failure, causing lean condition codes, rough idle, and hesitation under acceleration. Cleaning with MAF-safe cleaner sometimes restores function temporarily, but outright failure requires sensor replacement. This is a commonly overlooked cause of P0171/P0174 lean codes that owners often misdiagnose as a more expensive fuel system issue.
Typical mileage: 60,000-120,000 miles
Shop parts for this repairThe power liftgate system on the QX60 commonly develops problems including a slow or non-functional liftgate motor and failed liftgate struts that cause the hatch to fall unexpectedly. The liftgate motor tends to fail first; struts weaken progressively. This is a common complaint even at relatively low mileage, and the repair is frequently quoted as an out-of-warranty dealer expense.
Typical mileage: 40,000-90,000 miles
Shop parts for this repairThe Infiniti InTouch infotainment system is prone to freezing, black-screen reboots, and failure to respond to touch input. The navigation maps can become outdated (map subscription updates are costly), and Bluetooth connectivity is frequently reported as unreliable. Software updates from the dealer address some issues, but many owners report persistent problems throughout the ownership period.
Typical mileage: Any mileage
Shop parts for this repairIntake manifold gasket leaks and vacuum line deterioration are common sources of lean fuel mixture codes on the VQ35DE. Unlike some engines, these leaks can be difficult to locate without a smoke test. Rubber vacuum lines connected to the intake plenum and PCV system harden and crack with age, drawing in unmetered air and causing lean conditions on one or both banks.
Typical mileage: 80,000-160,000 miles
Shop parts for this repairThe 2014-2015 QX60 Hybrid uses a lithium-ion battery pack that can degrade, reducing the electric assist contribution and fuel economy. Owners report reduced EV-mode operation and decreased fuel efficiency as the battery ages. Full hybrid battery replacement is expensive; Infiniti discontinued the QX60 Hybrid after 2015, so long-term parts availability is a consideration.
Typical mileage: 80,000-150,000 miles
Shop parts for this repairRecalls
The brake booster vacuum hose may crack or become disconnected, reducing brake assist and increasing the effort required to stop the vehicle, raising the risk of a crash.
The fuel pump control module may overheat and fail, causing the engine to stall without warning. In the worst case, the module could ignite nearby components, creating a fire risk.
A software defect in the shift-by-wire system may prevent the transmission from shifting out of park when the brake pedal is depressed, or may unexpectedly allow the vehicle to roll when parked.
The rear view camera display may take up to 5 seconds to activate after the transmission is shifted into reverse, reducing rear visibility during initial backing maneuvers and not complying with FMVSS 111.
The front lower ball joint may be improperly torqued from the factory, potentially loosening over time and causing loss of steering control.
Available Engines
Common OBD2 Codes
| Code | Frequency | Notes |
|---|---|---|
| P0300 | Common | Random/multiple cylinder misfire. Reported in early second-generation QX60s, sometimes linked to fuel delivery inconsistencies in early production units or carbon buildup on the direct-injection engine's intake valves. Spark plug quality and condition should be checked first. |
| P0171 | Common | System too lean, bank 1. The new VQ35DD direct-injection engine is susceptible to carbon buildup on intake valves, which can cause uneven air-fuel distribution and lean conditions. Also seen with vacuum leaks and MAF sensor issues. |
| P0174 | Common | System too lean, bank 2. Commonly accompanies P0171, pointing to a systemic issue such as MAF contamination, intake leak, or carbon buildup affecting both cylinder banks. |
| P0420 | Occasional | Bank 1 catalytic converter efficiency below threshold. Less common in newer models but has been reported; can be caused by short-trip driving preventing converters from reaching optimal operating temperature, or by an underlying engine misfire that degrades catalysts prematurely. |
| P0430 | Occasional | Bank 2 catalytic converter efficiency below threshold. Typically coincides with P0420 when it appears. Verify with live O2 sensor data before replacing converters. |
| P0741 | Occasional | Torque converter clutch performance. Reported in some second-generation QX60s with the 9-speed automatic, particularly in the early 2022 model year. May be addressed by transmission software reprogramming or fluid service. |
| P0730 | Occasional | Incorrect gear ratio detected. Found alongside P0741 in some reports of 9-speed transmission hesitation or rough shifting behavior. Dealer software updates have resolved the issue in many cases. |
| P0101 | Occasional | Mass airflow sensor range/performance. Seen when the MAF sensor reading is inconsistent under changing engine load. Often caused by a contaminated sensor element or a minor air leak between the MAF sensor and throttle body. |
| P0455 | Occasional | EVAP large leak detected. Most often a loose or degraded gas cap on the QX60; the capless fuel filler system on second-gen models can develop debris contamination in the seal, causing large EVAP leak codes. |
| P0128 | Occasional | Engine coolant temperature below thermostat threshold. A failed-open thermostat is the usual cause. Reduced heater output and slightly lower fuel economy are the primary symptoms; the repair is inexpensive and straightforward. |
Known Problems
Early 2022 and some 2023 QX60 owners have reported transmission hesitation during low-speed acceleration, unexpected gear hunting, and occasional harsh 1-2 or 2-3 upshifts. Infiniti has released software calibration updates through dealers that substantially improve shift behavior for most affected vehicles. Owners experiencing these symptoms should visit the dealer and specifically request a transmission control module reflash. Persistent problems after reprogramming may require valve body inspection.
Typical mileage: 0-30,000 miles
Shop parts for this repairThe second-generation QX60 uses the VQ35DD engine with direct injection only, which eliminates the port injection that would naturally clean intake valves. Carbon deposits accumulate on the valves over time, causing rough idle, misfires, hesitation, and lean codes. The only effective remedies are walnut blasting or manual valve cleaning, both of which require significant disassembly. Owners using Top Tier fuel and performing occasional high-RPM driving can slow deposit formation. Expect this issue to become more prevalent as the fleet ages past 60,000-70,000 miles.
Typical mileage: 60,000-100,000 miles
Shop parts for this repairThe second-generation QX60 features Infiniti's ProPILOT Assist semi-autonomous driving system, which has generated owner complaints of phantom braking, false forward collision warnings, and unexpected system deactivation at highway speeds. Windshield camera calibration can be knocked out by small impacts or even a hard bump, and recalibration at a dealer is required. The system also becomes unreliable in heavy rain or road glare conditions.
Typical mileage: Any mileage
Shop parts for this repairThe second-generation QX60 introduced an Android Automotive-based Google Built-In infotainment system, which has received mixed reviews for responsiveness and reliability. Owners report the system becoming slow over time, wireless Apple CarPlay dropping connections, and the system requiring periodic hard resets. Over-the-air software updates have addressed some issues, but the system's long-term maturity continues to develop.
Typical mileage: Any mileage
Shop parts for this repairA number of second-generation QX60 owners have reported intrusive wind noise, particularly from the front door window seals and the B-pillar area at highway speeds. Dealer inspections sometimes identify improperly seated door seals or minor door alignment issues. The fix typically involves weather strip adjustment or replacement, but results vary in effectiveness.
Typical mileage: Any mileage
Shop parts for this repairBrake-related ticking or scraping sounds have been reported in second-generation QX60 models, traced to the rear brake dust shields contacting the rotors due to slight deformation from road debris or thermal cycling. Dealers typically bend the shield away from the rotor as the fix. While not a safety issue, the noise can be persistent and difficult to diagnose without a lift.
Typical mileage: 5,000-40,000 miles
Shop parts for this repairMany second-generation QX60 owners report real-world fuel economy significantly below the EPA-rated 20 city / 27 highway mpg figures, particularly in mixed city driving. Contributing factors include the 9-speed transmission's calibration in stop-and-go traffic and the relatively high vehicle weight. While not a defect per se, owners expecting premium fuel efficiency are frequently disappointed.
Typical mileage: Any mileage
Shop parts for this repairRecalls
The instrument cluster display may go blank while driving, preventing the driver from seeing vehicle speed, fuel level, and warning indicators. The root cause was traced to a software issue in the cluster control unit, addressed via dealer reprogramming.
The rearview camera image may be delayed or absent for several seconds after shifting into reverse, reducing visibility during initial backing and not complying with federal rearview visibility standards (FMVSS 111). A software update corrects the delay.
Under certain seating conditions, the occupant classification system may incorrectly suppress the front passenger airbag when an adult occupant is present, reducing protection in a frontal crash. A software update to the OCS module is the remedy.
A software error in the ProPILOT Assist system may cause the vehicle to not respond appropriately to a stationary object detected ahead during highway assist operation, potentially failing to apply emergency braking in time. A free over-the-air or dealer software update corrects the logic error.