Volkswagen Polo Service & Repair Manual: 4-Pin Heated Oxygen Sensor (HO2S), Removing and Installing
 Note
| Do not repair the heated oxygen sensor wires. Repairing may
result in malfunctions. |
| Use the faulty sensor as a guide for installing all of the
accompanying attachments, cable ties or marking bands. |
| If necessary, identify the heated oxygen sensor (HO2S) using
the protective tube. Refer to
→ Chapter „Oxygen Sensor Unit Protective Pipes“. |
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Remove the faulty oxygen sensor. |
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Lay both of the oxygen sensor next to each other so the
sensor housings are the same level. |
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Tie the excess length of the sensor (approximately 50 to 250
mm) back so it is the same length as the faulty sensor and
secure it with cable ties -1-. |
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Check if the oxygen sensor connector housing is compatible
with the vehicle electrical system side. |
| – |
If necessary, replace the vehicle electrical system
connector with the provided oxygen sensor connector housing.
Refer to
→ Chapter „Contact Housings and Connectors, Repairing“. |
Note
| Only replace the connector housing on older vehicles. The
connector housing is correct on new vehicles. |
| Check the pin assignment. The pins in the new connector
housing are color coded. |
| The packaging for the new heated oxygen sensor contains
additional information. |
| – |
Install the new oxygen sensor in the vehicle. |
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 |
Note
Use the faulty sensor as a guide for installing all of the
accompanying attachments, cable ties or marking bands.
Do ...
Other materials:
Removing and installing the headlights
Fig. 176 In the engine
compartment: securing bolts for the right headlight
Fig. 177 Guides for installing the
right headlight
First read and observe the introductory
information and safety warnings
Depending on the vehicle variant, the headlight may have to be removed in
order to replac ...
Tire Sealant, Disposal
Tire sealant or residue from it must not be mixed with other
wastes/fluids
Accumulating fluid residue from tire sealant must be
collected and placed in a plastic container. The plastic
containers can be sent for recycling together ...
General Information
Perform a road test to determine if a vehicle pulls to one
side and if so, when and to which side. If the vehicle pulls to
one side. Refer to
→ Chapter „Corrective Action When Vehicle Pulls to One Side“.
If the vehicle ali ...
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6-Pin Universal Oxygen Sensor, Removing and Installing