300Tdi Discovery
17
EMISSION CONTROL
4
REPAIR
HEATED OXYGEN SENSOR (HO2S) - 4.0 V8
WARNING: Do not attempt HO2S removal
when the exhaust is hot.
Remove
For all sensors:
1. Raise and support front of vehicle.
2. Release sensor lead from clips.
RH front sensor only
3. Remove nuts retaining coil bracket and position
bracket aside.
See FUEL SYSTEM SFI, Repair,
Ignition Coils
4. Release multiplug from bracket behind cylinder
head.
5. Disconnect multiplug and release sensor lead
from clip.
6. Unscrew and remove sensor from exhaust pipe.
LH front sensor
7. Disconnect multiplug and release from bracket.
8. Unscrew and remove sensor from exhaust pipe
using special tool LRT-12-047 (LST134).
