P0174 2004 NISSAN MAXIMA - Fuel Injection System Too Lean Bank 2
P0174 2004 NISSAN MAXIMA Possible Causes
- Intake air leaks
- Faulty front heated oxygen sensor
- Ignition misfiring
- Faulty fuel injectors
- Exhaust gas leaks
- Incorrect fuel pressure
- Lack of fuel
- Faulty Mass Air Flow (MAF) sensor
- Incorrect Positive Crankcase Ventilation (PCV) hose connection
How is the P0174 2004 NISSAN MAXIMA code repair?Start by checking the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.
There is a factory service bulletin for the following Nissan models:
2004 Maxima (A34) with 5 speed A/T only
2004 Nissan Maxima Factory Service Bulletin OBDII Code P0174
2004 Maxima (A34) with 4-speed A/T and 6-speed M/T2004 Nissan Maxima Factory Service Bulletin OBDII Code P0174
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What is the cost to diagnose the P0174 2004 NISSAN MAXIMA code
Labor: 1.0The cost to diagnose the P0174 2004 NISSAN MAXIMA code is 1.0 hour of labor. The auto repair's diagnosis time and labor rates vary by location, vehicle's make and model, and even your engine type. Most auto repair shops charge between $75 and $150 per hour.
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- Engine Light ON (or Service Engine Soon Warning Light)
- Excessive Fuel Consumption
P0174 2004 NISSAN MAXIMA MeaningWith the Air/Fuel Mixture Ratio Self-Learning Control, the actual mixture ratio can be brought closer to the theoretical mixture ratio based on the mixture ratio feedback signal from the heated oxygen sensors 1. The Engine Control Module (ECM) calculates the necessary compensation to correct the offset between the actual and the theoretical ratios.
In case the amount of the compensation value is extremely large (The actual mixture ratio is too lean.), the ECM judges the condition as the fuel injection system malfunction and light up the MIL (2 trip detection logic).
The Diagnostic Trouble Code (DTC) will set when the Fuel Injection system does not operate properly or the amount of mixture ratio compensation is too small. (The mixture ratio is too lean.)
More InformationNeed more information on how to fix the P0174 2004 NISSAN MAXIMA code?
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