DTC P0155 BMW
HO2S (Bank 2 Sensor 1) Heater Circuit Malfunction
HO2S (Bank 2 Sensor 1) Heater Circuit Malfunction
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 an open or shorted con
Cause and Solution
HO2S heater power circuit is open
HO2S heater ground circuit is open
HO2S signal tracking (due to oil or moisture in the connector)
Video Guide
Diagnostic Info
- DTC Code: P0155
- Brand: BMW