Volkswagen Passat
P0138
The vehicle has triggered a P0138 error code, indicating a high voltage signal from the oxygen sensor, specifically for the upstream sensor in the exhaust system. This issue is common in Volkswagen Passat B8 models from 2015 to 2022.
2 SolutionsP-CodePowertrain
P
Error Code Type
Powertrain
Components
1 affected
Exhaust System
Symptoms
8 common
- •Check engine light illuminated
- •Poor engine performance or rough idle
- •Decreased fuel efficiency
- +5 more
Most Affected Generations
1 generation
B8
2
Top Affected Components
1 component
Exhaust System
2
Severity Levels
1 level
medium
2
Quick Facts
2
Total Solutions
1
Affected Components
8
Common Symptoms
1
Generations
All Solutions
Showing 2 of 2 solutions for error code P0138 across all generations.
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