Subaru Outback
P0134
The P0134 code indicates a malfunction in the oxygen sensor circuit, specifically that the signal from the upstream oxygen sensor (Bank 1, Sensor 1) is not reaching the engine control unit (ECU) within the expected time frame.
1 SolutionP-CodePowertrain
P
Error Code Type
Powertrain
Components
1 affected
Exhaust System
Symptoms
5 common
- •Check engine light illuminated
- •Poor fuel economy
- •Rough engine idle
- +2 more
Most Affected Generations
1 generation
BT
1
Top Affected Components
1 component
Exhaust System
1
Severity Levels
1 level
medium
1
Quick Facts
1
Total Solutions
1
Affected Components
5
Common Symptoms
1
Generations
All Solutions
Showing 1 of 1 solution for error code P0134 across all generations.