Get the app
Quick access from your home screen.
P1095 on a BMW means the engine computer (DME) has detected that the upstream oxygen sensor on Bank 1 is switching from lean to rich more slowly than the programmed limit. The sensor is still generating a signal, but its response time has degraded enough to set the fault, which affects fuel trim accuracy and emissions.
Guidance is general and written for BMW vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.
Get the app
Quick access from your home screen.