P0174 Lincoln Code - Fuel Injection System Too Lean Bank 2
Quick Answer
With the Air/Fuel Mixture Ratio Self-Learning Control, the actual mixture ratio can be brought closely to the theoretical mixture ratio based on the mixture ratio feedback signal from the heated oxygen sensors 1. Common causes include Intake air leaks, Faulty front heated oxygen sensor, Ignition misfiring. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P0174 Lincoln indicates Fuel Injection System Too Lean Bank 2.
- Common causes
- Common causes include Intake air leaks, Faulty front heated oxygen sensor, Ignition misfiring.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code P0174 Lincoln Description
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).
What are the Possible Causes of the DTC P0174 Lincoln?
- Intake air leaks
- Faulty front heated oxygen sensor
- Ignition misfiring
- Faulty fuel injectors
- Exhaust gas leaks
- Incorrect fuel pressure
- Lack of fuel
- Faulty Positive Crankcase Ventilation (PCV)
- Faulty Mass Air Flow (MAF) sensor
- Incorrect PCV hose connection
How to Fix the DTC P0174 Lincoln?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
Code Tech Notes
2009-2011 Lincoln Navigator Factory Service Bulletin OBDII Code P0174
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0174 Lincoln code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
Need more information about the P0174 Lincoln code?
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Need Help with the Code?
Get the P0174 Lincoln code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P0174 Lincoln Code
No Frequently Asked Questions about P0174 Lincoln Code found.
Discuss the causes and fixes for P0174 Lincoln OBDII Code
-
2005 Chevy Tahoe with 5.3 L and rec'd the p0174 code but has a multidue of items to check and or change-
since the vehicles has 117l miles and the spark plugs and mass flow sensor along with the front ONLY O2 sensor(s) were inspected and replaced- still have the p0174 code and looking for other ideas for troubleshooting -
Unfortunately, the P0174 code is not specific about which problem is setting the code. I check a national database of repairs for the most frequent problem on the 2005 Tahoe, and the most frequent problem is the Intake Manifold Gasket, follow by the Mass Air Flow sensor and Fuel Pump.
P0174 Chevrolet Code - Fuel Trim System Lean Bank 2
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