Toyota Tacoma
P0138
The P0138 code indicates that the Engine Control Module (ECM) has detected a high voltage signal from the oxygen sensor (O2 sensor) circuit, specifically the Bank 1 Sensor 2 O2 sensor on a 2016-present Toyota Tacoma N300.
2 SolutionsP-CodePowertrain
P
Error Code Type
Powertrain
Components
1 affected
Exhaust System
Symptoms
7 common
- •Check engine light illuminated
- •Poor fuel economy
- •Rough idle or stalling
- +4 more
Most Affected Generations
1 generation
N300
2
Top Affected Components
1 component
Exhaust System
2
Severity Levels
1 level
medium
2
Quick Facts
2
Total Solutions
1
Affected Components
7
Common Symptoms
1
Generations
All Solutions
Showing 2 of 2 solutions for error code P0138 across all generations.