DTC P3029 BMW
O2 Sensor Heater Control No Activity Detected Bank 2 Sensor 1
O2 Sensor Heater Control No Activity Detected Bank 2 Sensor 1
Description
Engine running for 40 seconds, battery voltage 11.5, 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 O2S signal was implausible or not
Cause and Solution
Oxygen sensor heater for oxygen sensor (HO2S) before catalytic converter is faulty
O2S is contaminated (due to presence of silicone in fuel)
O2S signal and ground circuit wires crossed in wiring harness
Video Guide
Diagnostic Info
- DTC Code: P3029
- Brand: BMW