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Lambda Sensor - DENSO - DOX-0288

Lambda Sensor - DENSO - DOX-0288

This DENSO Lambda Sensor (DOX-0288) is a premium quality, direct-fit oxygen sensor manufactured to...

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Lambda sensor Heated DOX-0288 DENSO for TOYOTA AVENSIS Estate AVENSIS Saloon

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Product Information

Full details

The DENSO Lambda Sensor (DOX-0288) is an essential component for vehicle owners seeking to maintain optimal engine performance, fuel efficiency, and emissions standards. Designed as a premium, direct-fit replacement, it is ideal for DIY mechanics or professional technicians who require original equipment (OE) quality for reliable combustion monitoring. While the sensor is built for longevity and precision, it is critical to verify vehicle compatibility before purchase, as improper sensor matching can lead to inaccurate engine management readings.

All features

Model Part NumberDOX-0288
BrandDENSO

Extended Product Information

FAQs

How often should I replace my Lambda sensor?

While there is no strict mileage limit, it is generally recommended to inspect or replace oxygen sensors if you notice a drop in fuel efficiency or after 100,000 miles.

Can I use dielectric grease on the connector?

Yes, a light application of dielectric grease on the electrical connector pins can help prevent moisture corrosion, but never get grease on the sensor tip.

Is it normal for the threads to be pre-greased?

Yes, DENSO includes anti-seize compound to ensure you can remove the sensor in the future without damaging the exhaust threads.

What does a 4-pin connector indicate?

The 4-pin design signifies that the sensor includes a heater circuit, which helps the sensor reach its operating temperature faster than non-heated sensors.

Does it matter which way the wire is routed?

Yes, ensure the 630mm cable is routed away from extremely hot components and moving parts to prevent wire insulation melting or snapping.

Troubleshooting

Check Engine Light persists after installation

Clear the diagnostic trouble codes (DTCs) using an OBD-II scanner, as the ECU may still be registering the old sensor's data.

Sensor appears to have no signal

Verify that the 4-pin connector is fully seated and that no pins are bent or pushed back inside the connector housing.

Pros and Cons

Pros

  • Exact OEM fitment reduces installation time
  • Pre-greased threads prevent heat-related seizing
  • High-quality construction ensures reliable fuel trim data
  • 4-pin connector matches stock wiring perfectly

Cons

  • Requires specific vehicle verification to ensure compatibility
  • Lambda sensors are sensitive and must be handled with care to avoid damage
  • Professional-grade tools are required for extraction and installation

Setup, Compatibility & Care

Installation should be performed while the exhaust system is cool to avoid thermal burns. Always use an oxygen sensor socket to prevent damaging the sensor body during installation. Before inserting the DOX-0288, inspect the wire harness for signs of heat damage or corrosion; if found, these must be repaired to ensure the new sensor functions correctly. Use a torque wrench to tighten the sensor to the manufacturer's specified torque settings. Do not use any additional lubricants or cleaning sprays on the sensor tip, as these can contaminate the zirconium element and lead to premature failure.

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