Heated Oxygen Sensor (HO2S), Replacing

Heated oxygen sensor (HO2S), replacing

Front heated oxygen sensors (HO2S), replacing

Note! For tightening torques, see Specifications, B6324S Tightening Torque.

Removing front heated oxygen sensors (HO2S)

Note! As the illustrations in this service information are used for different model years and/or models, some variation may occur. However, the essential information in the illustrations is always correct.

Remove the splashguard under the engine.
Disconnect the connectors for the heated oxygen sensors (HO2S). Disconnect the wiring.





Remove:
- the wiring for the heated oxygen sensors (HO2S) from the clamps
- the heated oxygen sensors (HO2S). Use tool 999 5543 SOCKET NV-22 HO2S 999 5543 Socket NV-22 HO2S.

Caution! Note the position of the probes.

Installing front heated oxygen sensors (HO2S)

Caution! Note the position of the probes.

Install:
- the heated oxygen sensors (HO2S). Lubricate the threads using paste 116 1408. Tighten to 45 Nm. Use tool 999 5543 SOCKET NV-22 HO2S 999 5543 Socket NV-22 HO2S
- the connectors
- the lower engine cover.

Finishing
Install the wiring for the heated oxygen sensors (HO2S) using clips and clamps.
Test drive the engine.
Check for leakage.

Rear heated oxygen sensor (HO2S), replacing

Removing the rear heated oxygen sensor (HO2S)




- Remove the splashguard under the engine.
- Disconnect the connectors for the heated oxygen sensors (HO2S)
- Remove the clamps from the wiring for the heated oxygen sensor (HO2S)
- Remove the heated oxygen sensor (HO2S). Use tool 999 5543 SOCKET NV-22 HO2S 999 5543 Socket NV-22 HO2S.

Installing the rear heated oxygen sensor (HO2S)

Install:
- the heated oxygen sensor (HO2S). Lubricate the studs using paste 116 1408. Tighten to 45 Nm. Use tool 999 5543
- the clamps for the heated oxygen sensor (HO2S) wiring
- the connector
- the lower engine cover.
Test drive the engine.
Check for leakage.

Erase Diagnostic Trouble Codes (DTCs).

Reset trim.