Toyota RAV4
P0138
The P0138 code on a 2019-present Toyota RAV4 indicates that the Engine Control Module (ECM) has detected a high voltage signal from the downstream oxygen sensor (O2 sensor) circuit.
16 SolutionsP-CodePowertrain
P
Error Code Type
Powertrain
Components
1 affected
Exhaust System
Symptoms
10 common
- •Check engine light illuminated
- •Poor fuel economy
- •Rough engine idle
- +7 more
Most Affected Generations
2 generations
XA40
12
XA50
4
Top Affected Components
1 component
Exhaust System
16
Severity Levels
1 level
medium
16
Quick Facts
16
Total Solutions
1
Affected Components
10
Common Symptoms
2
Generations
All Solutions
Showing 16 of 16 solutions for error code P0138 across all generations.