Ford Explorer
P0171
The P0171 code indicates a "System Too Lean (Bank 1)" condition in a 2020-present Ford Explorer, which means the engine control module (ECM) has detected an excessively lean air-fuel mixture for the first bank of cylinders.
60 SolutionsP-CodePowertrain
P
Error Code Type
Powertrain
Components
2 affected
EngineFuel System
Symptoms
10 common
- •Check engine light illuminated
- •Rough idle
- •Decreased fuel economy
- +7 more
Most Affected Generations
2 generations
U625
35
U502
25
Top Affected Components
2 components
Engine
52
Fuel System
8
Severity Levels
2 levels
high
34
medium
26
Quick Facts
73
Total Solutions
2
Affected Components
10
Common Symptoms
2
Generations
All Solutions
Showing 60 of 73 solutions for error code P0171 across all generations.
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