Precautionary Measures When Handling Oxygen Sensors

CAUTION:
Oxygen sensor can be damaged if bandied improperly.
- Do not remove the plastic cap on the thread until just prior to fitting the oxygen sensor. The thread grease must under no circumstances come into contact with the connector.
- Protect sensors -before and after fitting- against mechanical shocks.
- Sensors that were dropped on the floor must not be used owing to the risk of a broken ceramic insulator.
- The cables must not be twisted or kinked when the sensors are screwed in. Avoid pulling on the cable and connector.
- Cleanliness in the housing of the plug connections is of utmost importance for the function of the oxygen sensor. Particles of dirt can impair the function of the oxygen sensor. Therefore, the connector must be protected against any and all types of soiling.
- Sensors with soiled or damaged connector must no longer be used.
- Protect the cables and plugs when transporting the exhaust system with the sensors already fitted.
- High-pressure cleaning equipment must not be used in the area of the sensors and plug connections.
- Contact and corrosion agents, e.g. Stabilant, must not be applied on the plug contacts of the oxygen sensors.

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.

• Brakes feel soft, pull hard to one side, or make grinding noises.

• The engine overheats, stalls repeatedly, or misfires under load.

• You are missing required tools, torque specs, or safe lifting equipment.

• You are not confident in the next step or safety outcome.

Safety Warning

Oxygen Sensor: Service Precautions

Use the Manual With the Right Hardware

When to See a Mechanic