p0174
Moderate
Lincoln · SUVs
System Too Lean (Bank 2)
Quick Answer
Error code P0174 on your Lincoln SUVs means: System Too Lean (Bank 2). This is usually fixable — see the step-by-step guide below.
Affected Models
Applies to all models
Likely Causes
How to Fix It
1
Scan for additional diagnostic codes
2
Test oxygen sensor Bank 2
3
Check fuel system pressure
4
Inspect intake manifold gaskets
5
Perform smoke test for leaks
Pro Tip
This fix requires some technical knowledge. If you're unsure about any step, consider contacting support or a qualified technician.
Parts You May Need
Oxygen sensor
Fuel pump assembly
Intake manifold gasket
Fuel injectors
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