DTC P0135 BMW
HO2S (Bank 1 Sensor 1) Heater Circuit Malfunction
HO2S (Bank 1 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 unexpected voltage
Cause and Solution
HO2S heater power circuit is open or heater ground circuit open
HO2S signal tracking (due to oil or moisture in the connector)
Video Guide
Diagnostic Info
- DTC Code: P0135
- Brand: BMW