BMW 5 Series
P0171
The P0171 code indicates a "System Too Lean (Bank 1)" condition in a BMW 5 Series F10/F11 (2010-2017). This issue typically arises from an imbalance in the air-fuel mixture, leading to insufficient fuel in the combustion process.
60 SolutionsP-CodePowertrain
P
Error Code Type
Powertrain
Symptoms
10 common
- •Check engine light illuminated.
- •Rough idle when the engine is running.
- •Loss of power during acceleration.
- +7 more
Most Affected Generations
2 generations
F10
40
G30
20
Severity Levels
1 level
medium
60
Quick Facts
78
Total Solutions
0
Affected Components
10
Common Symptoms
2
Generations
All Solutions
Showing 60 of 78 solutions for error code P0171 across all generations.