Removing and Installing Oxygen Sensor Behind Catalytic Converter

Removing And Installing Oxygen Sensor Behind Catalytic Converter

Tools

Tools:

Preliminary work

Preliminary work for removing oxygen sensor behind the catalytic converter
1. Remove air cleaner housing.

Removing oxygen sensor behind the catalytic converter

Removing oxygen sensor behind catalytic converter of cylinder bank 1-3

NOTE: Always expose oxygen sensor wire far enough for it to be able to turn when unscrewing the sensor.







1. Disconnect plug connection in left of engine compartment for the oxygen sensor behind catalytic converter. To do this, first remove the grey connector from the holder and pull the red locking element upwards. Disconnect cable plug -1-.
2. Release the black cable from the cable guide.







3. For better accessibility, undo the exhaust clamp by unscrewing the fastening screw -arrow- and remove the clamp.







4. Release oxygen sensor from the vehicle underside using an open-ended wrench or open ring wrench (a/f 22) and screw it out by hand - Releasing oxygen sensor.

Removing oxygen sensor behind catalytic converter of cylinder bank 4-6

NOTE: Always expose oxygen sensor wire far enough for it to be able to turn when unscrewing the sensor.

1. Disconnect plug connection in right of engine compartment for the oxygen sensor behind catalytic converter. To do this, first remove the grey connector from the holder and pull the red locking element upwards. Disconnect cable plug.
2. Release black cable of the oxygen sensor behind catalytic converter from the cable holder.







3. Undo oxygen sensor using an open-ended wrench or open ring wrench (a/f 22) and screw it out by hand.

Installing oxygen sensor behind the catalytic converter

Installing oxygen sensor behind catalytic converter of cylinder bank 1-3
1. Guide the oxygen sensor through so that the cable can be easily routed from the engine compartment side to the exhaust system.
2. Position the oxygen sensor by hand and screw in as far as possible.







3. Tighten oxygen sensor with commercially available open ring wrench accessory for torque wrench. Open ring wrench angled NR.96-3 and torque wrench Torque wrench, signal-transmitting with change over ratchet NR.90 and tighten to the specified Tightening torque: 41 ft.lb. ± 3.5 ft.lb. In order to disengage the torque wrench, actuate catch with a small wire or Allen key - Tool on oxygen sensor.







4. Re-fit exhaust clamp and fit fastening screw to the specified Tightening torque: 17 ft.lb.-arrow-.
5. Lay black oxygen sensor cable and fix in cable guide. Fit cable plug.

Installing oxygen sensor behind catalytic converter of cylinder bank 4-6
1. Guide the oxygen sensor through so that the cable can be easily routed from the engine compartment side to the exhaust system.
2. Position the oxygen sensor by hand and screw in as far as possible.
3. Tighten oxygen sensor with commercially available open ring wrench accessory for torque wrench. Open ring wrench angled NR.96-3 and torque wrench Torque wrench, signal-transmitting with change over ratchet NR.90 and tighten to the specified Tightening torque: 41 ft.lb. ± 33.5 ft.lb.
4. Lay black oxygen sensor cable and fix in cable guide. Fit cable plug.

Subsequent work

Subsequent work for installing oxygen sensor behind the catalytic converter
1. Install air cleaner housing.