BMW 3 Series
P0174
The P0174 code indicates a lean condition in the engine, specifically referring to "System Too Lean (Bank 2)" in a BMW 3 Series E90/E91 (2005-2012). This can result from various factors including vacuum leaks, fuel delivery issues, or sensor malfunctions.
59 SolutionsP-CodePowertrain
P
Error Code Type
Powertrain
Symptoms
10 common
- •Check engine light illuminated
- •Rough idle or stalling
- •Poor acceleration or loss of power
- +7 more
Most Affected Generations
3 generations
E90
20
F30
20
G20
19
Severity Levels
1 level
medium
59
Quick Facts
59
Total Solutions
0
Affected Components
10
Common Symptoms
3
Generations
All Solutions
Showing 59 of 59 solutions for error code P0174 across all generations.