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Ford P0174 Code – System Too Lean Bank 2
Limited
Safe to drive :
Ford vehicles only
Applies only to :
Not applicable to :
This explanation does NOT apply to Toyota, BMW, GM, VW, or other manufacturers.
Medium
Severity level :
When Does This Code Appear on the Vehicles
Ford P0174 usually appears alongside drivability issues and affects Bank 2.
What This Code means on the Vehicles
On Ford vehicles, P0174 means Bank 2 is running lean beyond PCM correction limits.
Why This is different from a generic OBD2 Code
Ford intake designs frequently cause unmetered air issues that affect both banks.
Common Situations That Trigger This Code
Intake gasket leaks; Vacuum hose failure; MAF contamination.
What Will NOT Fix This Code
Replacing fuel pump unnecessarily; Replacing downstream O2 sensors.
How to Clear This Code on Vehicles
Repair intake leaks, clean airflow sensors, confirm balanced fuel trims.
Related Manufacturer Specific Codes
Ford P0171; Ford P2196
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