Toyota Corolla
P0134
The P0134 code indicates a problem with the oxygen sensor circuit, specifically that the Engine Control Module (ECM) has detected a slow response from the upstream oxygen sensor (Bank 1, Sensor 1) on the 2019-2024 Toyota Corolla E210.
2 SolutionsP-CodePowertrain
P
Error Code Type
Powertrain
Components
1 affected
Exhaust System
Symptoms
8 common
- •Check engine light illuminated
- •Poor fuel economy
- •Rough idle
- +5 more
Most Affected Generations
2 generations
E210
1
E140
1
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
2
Generations
All Solutions
Showing 2 of 2 solutions for error code P0134 across all generations.