DTC P0133 BMW
HO2S (Bank 1 Sensor 1) Circuit Slow Response
HO2S (Bank 1 Sensor 1) Circuit Slow Response
Description
Engine running, battery voltage 11.5, all electrical components off, ground between engine and chassis well connected and the exhaust system must be properly sealed between catalytic converter and the cylinder head. The DME detected the HO2S amplitude and
Cause and Solution
HO2S before the three-way catalytic converter is contaminated (due to presence of silicone in fuel); Run the engine for three minutes at 3500rpm as a self-cleaning effect
HO2S signal circuit open
Video Guide
Diagnostic Info
- DTC Code: P0133
- Brand: BMW