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Infiniti QX4 Problems

Find the most common issues based on Infiniti QX4 owner complaints.
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Most Common Infiniti QX4 Problems

Carbon deposits on the throttle body may cause any of the following issues: Idle speed fluctuation, incorrect idle speed, difficulty accelerating way from a stop, and or increased accelerator pedal...
The 4WD light may flash on and off intermittently with no transfer case related fault code stored in the powertrain control module (PCM). Our technicians recommend to ensure the correct Nissan/Infi...
Failure of the EVAP System charcoal canister may allow charcoal debris to infiltrate the EVAP system causing other failures. Cleaning the vapor lines to ensure the system is clear of debris is impo...
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0 Known Infiniti QX4 Brakes Problems

1 Known Infiniti QX4 Drive Train Problem

The 4WD light may flash on and off intermittently with no transfer case related fault code stored in the powertrain control module (PCM). Our technicians recommend to ensure the correct Nissan/Infi...

0 Known Infiniti QX4 Electrical & Lights Problems

3 Known Infiniti QX4 Engine Problems

Carbon deposits on the throttle body may cause any of the following issues: Idle speed fluctuation, incorrect idle speed, difficulty accelerating way from a stop, and or increased accelerator pedal...
Rattling and tapping in the front of the engine on the 2001-2004 Infiniti QX4 is very evident, especially on cold starts. This rattling noise should not be taken lightly as it warns of upcoming tim...
An abnormal noise may develop from the timing chain area, Our technicians tell us it may be necessary to replace the variable valve timing camshaft shaft sprockets to correct this concern.

7 Known Infiniti QX4 Exhaust & Emissions Problems

Failure of the EVAP System charcoal canister may allow charcoal debris to infiltrate the EVAP system causing other failures. Cleaning the vapor lines to ensure the system is clear of debris is impo...
The Check Engine Light may illuminate with code P0138, P0140, P0158, and/or P0160 stored. Our technicians recommend replacing the rear oxygen sensor, and reprogramming the vehicle's powertrain cont...
Front catalytic converters are prone to cracking along the seams of the converter itself. Most repair shops can successfully weld the seems to prevent exhaust leakage.

1 Known Infiniti QX4 Heating & Air Conditioning Problem

The heater blower motor may only work on the high speed setting. Our technicians recommend replacing the heater blower motor and fan control amplifier to address this problem.

1 Known Infiniti QX4 Maintenance Problem

The throttle body for the Infiniti QX4 is known for carbon buildup, and requires regular, light cleaning to maintain peak performance. After cleaning the throttle body, many owners notice a very hi...

0 Known Infiniti QX4 Miscellaneous Problems

0 Known Infiniti QX4 Suspension & Steering Problems

13
Known Infiniti QX4 Problems & Complaints

The mass airflow sensor may fail resulting in a loss of power and/or Check Engine Light illumination with code P0171 and/or P0174 stored. Our technicians recommend replacing the failed airflow sens...
The throttle body for the Infiniti QX4 is known for carbon buildup, and requires regular, light cleaning to maintain peak performance. After cleaning the throttle body, many owners notice a very hi...
Rattling and tapping in the front of the engine on the 2001-2004 Infiniti QX4 is very evident, especially on cold starts. This rattling noise should not be taken lightly as it warns of upcoming tim...
The Check Engine Light may illuminate with throttle position switch fault codes stored. Our technicians tell us a revised throttle position switch is available to correct this concern.
The Check Engine Light may illuminate indicating a fault with two or more oxygen sensors. Our technicians tell us this may be caused by a poor ground between the cylinder head and the exhaust manif...
The Check Engine Light may illuminate with code P0138, P0140, P0158, and/or P0160 stored. Our technicians recommend replacing the rear oxygen sensor, and reprogramming the vehicle's powertrain cont...
The rear oxygen sensor may fail resulting in illumination of the Check Engine Light. Our technicians recommend to ensure the latest software is installed in the powertrain control module (PCM) alon...
Carbon deposits on the throttle body may cause any of the following issues: Idle speed fluctuation, incorrect idle speed, difficulty accelerating way from a stop, and or increased accelerator pedal...
The 4WD light may flash on and off intermittently with no transfer case related fault code stored in the powertrain control module (PCM). Our technicians recommend to ensure the correct Nissan/Infi...
Front catalytic converters are prone to cracking along the seams of the converter itself. Most repair shops can successfully weld the seems to prevent exhaust leakage.
The heater blower motor may only work on the high speed setting. Our technicians recommend replacing the heater blower motor and fan control amplifier to address this problem.
Failure of the EVAP System charcoal canister may allow charcoal debris to infiltrate the EVAP system causing other failures. Cleaning the vapor lines to ensure the system is clear of debris is impo...
An abnormal noise may develop from the timing chain area, Our technicians tell us it may be necessary to replace the variable valve timing camshaft shaft sprockets to correct this concern.
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