DTC P0139 BMW
HO2S (Bank 1 Sensor 2) Slow Response
HO2S (Bank 1 Sensor 2) 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 signal shorted to heater power circuit in the connector
Video Guide
Diagnostic Info
- DTC Code: P0139
- Brand: BMW