Removing and Installing Oxygen Sensors In Front of Catalytic Converter

Removing And Installing Oxygen Sensors In Front Of Catalytic Converter

Tools







Preliminary work

Preliminary work: removing oxygen sensors in front of catalytic converter - Cayenne Turbo (M48/50)

ATTENTION:
Danger of burns from hot exhaust system.
- Only remove the exhaust system once it has cooled down.
- Wear protective gloves.

1. Loosen and bend primary catalytic converter (primary catalytic converter does not need to be removed completely).







Preliminary work for removing oxygen sensors in front of catalytic converter - Cayenne S (M48/00)
1. Remove front wheel.
2. Remove front wheel housing liner.
3. Remove engine compartment cover above the oxygen sensor plugs.
4. Disconnect oxygen sensor plug for the oxygen sensor in front of catalytic converter at the right of the water splash panel and unclip the cable from the holder.







5. Remove air cleaner housing.

ATTENTION:
Danger of burns from hot exhaust system.
- Only remove the exhaust system once it has cooled down.
- Wear protective gloves.

6. Release oxygen sensor wire from the cable guide and leave it at the oxygen sensor.

Tools and materials

Tools - oxygen sensor







Removing oxygen sensors in front of catalytic converter - Cayenne Turbo (M48/50)







ATTENTION:
The oxygen sensor cable can be damaged if twisted.
- Change in emissions.
- Check Engine light comes on.
- Always expose oxygen sensor cable so that the wire can turn when unscrewing or screwing in the sensor.
- Do not kink cable.

1. Carefully unscrew oxygen sensors on primary catalytic converter.

Installing oxygen sensors in front of catalytic converter -Cayenne Turbo (M48/50)
1. Position the oxygen sensor by hand and screw in as far as possible.
2. Tighten oxygen sensor using special tool. Tightening torque: 33 ftlb. ±3.5 ftlb.

Removing oxygen sensors in front of catalytic converter -Cayenne S (M48/00)

ATTENTION:
The oxygen sensor cable can be damaged if twisted.
- Change in emissions.
- Check Engine light comes on.
- Always release oxygen sensor cable so that the wire can turn when unscrewing or screwing in the sensor.
- Do not kink cable.







ATTENTION:
The oxygen sensor cable can be damaged if twisted.
- Change in emissions.
- Check Engine light comes on.
- Always expose oxygen sensor cable so that the wire can turn when unscrewing or screwing in the sensor.
- Do not kink cable.

1. Remove the oxygen sensor in the exhaust manifold using a mirror. To do this, screw out the oxygen sensor with an open-ended wrench SW 22.

Installing oxygen sensors in front of catalytic converter -Cayenne S (M48/00)

ATTENTION:
The oxygen sensor cable can be damaged if twisted.
- Change in emissions.
- Check Engine light comes on.
- Always expose oxygen sensor cable so that the wire can turn when unscrewing or screwing in the sensor.
- Do not kink cable.

1. Preassemble the oxygen sensor in the exhaust manifold by hand using a mirror. Tighten oxygen sensor using a special tool. Tightening torque: 33 ftlb. ±3.5 ftlb.












Subsequent work

Subsequent work: installing oxygen sensors in front of catalytic converter - Cayenne Turbo (M48/50)
1. Install primary catalytic converter.







Touching up for installing oxygen sensors in front of catalytic converter - Cayenne S (M48/00)
1. Push oxygen sensor wire into the cable guide.
2. Connect the oxygen sensor plug for the oxygen sensor in front of catalytic converter at the right of the water splash panel and clip the wires into the guide. Fit cable plug.







3. Install air cleaner housing.
4. Fit engine compartment cover above the oxygen sensor plugs.
5. Install front wheel housing liner.
6. Fit front wheel.