BMW X3
P0420
The P0420 code in a BMW X3 F25 (2011-2018) indicates that the Engine Control Module (ECM) has detected a problem with the catalytic converter's efficiency, typically resulting in lower performance or increased emissions.
60 SolutionsP-CodePowertrain
P
Error Code Type
Powertrain
Symptoms
10 common
- •Check engine light illuminated
- •Rough idle or engine stalling
- •Decreased fuel economy
- +7 more
Most Affected Generations
1 generation
F25
60
Severity Levels
1 level
medium
60
Quick Facts
213
Total Solutions
0
Affected Components
10
Common Symptoms
1
Generations
All Solutions
Showing 60 of 213 solutions for error code P0420 across all generations.
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