Oxygen Sensor: Locations: Overview

Overview Of Component Locations (Vehicles With Engine Code BDC)







27 4-pin harness connector
- brown
- Terminals 3 and 4 gold-plated
- For Heated Oxygen Sensor (HO2S) 2 behind Three Way Catalytic Converter (TWC) -G130- and Oxygen Sensor (O2S) Heater 1 -Z29-
- Component location: At right vehicle underside
28 Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC) -G130- bank 1*, 50 Nm
- Component location: In rear catalytic converter
- Only use "G 052 112 A3" to grease thread; do not let "G 052 112 A3" get onto slit of oxygen sensor
- Voltage supply of oxygen sensor heater via Fuel Pump (FP) Relay -J17-
- Check oxygen sensor heater for Oxygen Sensor (O2S) behind Three Way Catalytic Converter (TWC)
- Check Oxygen Sensor (O2S) and oxygen sensor control behind Three Way Catalytic Converter (TWC)
29 6-pin harness connector
- Terminals are gold-plated
- Black, 6-pin
- For Heated Oxygen Sensor (HO2S) 1 before Three Way Catalytic Converter (TWC) -G39- and Oxygen Sensor (O2S) heater -Z19-
- Component location: At right vehicle underside
30 Heated Oxygen Sensor (HO2S) -G39- bank 1*, 50 Nm
- Component location: In exhaust manifold
- Use "G5" to grease thread only; do not let "G5" get onto slits of oxygen sensor body
- Voltage supply of oxygen sensor heater via Fuel Pump (FP) Relay -J17-
- Check oxygen sensor heater for Oxygen Sensor (O2S) before Three Way Catalytic Converter (TWC)
- Check Oxygen Sensor (O2S) and oxygen sensor control before Three Way Catalytic Converter (TWC).