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Lambda Sensor - DENSO - DOX-1701

Lambda Sensor - DENSO - DOX-1701

This DENSO Lambda Oxygen Sensor DOX-1701 is engineered to meet or exceed original equipment specif...

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eBayLambda sensor Heated DOX-1701 DENSO for VW AUDI SEAT SKODA
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Product Information

Full details

The DENSO DOX-1701 Lambda Oxygen Sensor is designed for automotive enthusiasts and DIY mechanics who require a high-precision replacement part to restore engine efficiency. This sensor excels at maintaining the ideal air-fuel ratio to protect your catalytic converter and optimize emissions, though users must strictly verify vehicle-specific compatibility before installation to ensure the sensor's electronic handshake matches their vehicle's ECU.

All features

Model Part NumberDOX-1701
BrandDENSO

Extended Product Information

FAQs

How often should I replace an oxygen sensor?

While there is no fixed interval, many sensors begin to lose efficiency after 60,000 to 100,000 miles.

Will this sensor fit any car?

No. The DOX-1701 is designed for specific models. You must verify compatibility using your vehicle's make, model, and engine specifications.

Can I drive with a bad oxygen sensor?

It is not recommended, as it can lead to poor fuel economy, increased emissions, and potential damage to your catalytic converter.

Do I need to program the car after installation?

Generally, no, but the engine computer may need a short driving cycle to relearn the fuel trim values.

What happens if I touch the sensor tip?

Contamination from oils or dirt on the tip can cause inaccurate readings or premature sensor failure.

Troubleshooting

Check engine light remains on after installation

Use an OBD-II scanner to clear existing diagnostic trouble codes after the new sensor is installed.

Sensor is difficult to remove from exhaust

Apply a penetrating oil to the threads and let it sit for several minutes, or run the engine briefly to warm the manifold slightly to break the rust seal.

Engine still runs poorly after replacement

Check the wiring harness for damage or corrosion and ensure the connector is fully seated until it clicks.

Pros and Cons

Pros

  • Meets or exceeds OEM quality standards
  • Helps improve fuel economy by correcting air-fuel ratios
  • Durable construction for long service life
  • Direct fit for specified applications
  • Reduces harmful vehicle exhaust emissions

Cons

  • Requires specific vehicle compatibility verification
  • Installation may require specialized oxygen sensor sockets
  • Does not include anti-seize compound in all packaging

Setup, Compatibility & Care

Before starting the installation, ensure the vehicle engine is cool to the touch to prevent burns from the exhaust manifold. Use an oxygen sensor wrench for safe removal of the old unit. Always check your vehicle owner's manual or a parts fitment guide using your VIN to ensure the DOX-1701 is the correct match for your specific engine configuration. When handling the new sensor, do not touch the sensing tip with bare fingers, as oils from your skin can contaminate the ceramic element. If the threads on the new sensor do not come pre-coated, apply a very thin layer of high-temperature oxygen sensor-safe anti-seize compound to the threads only, ensuring none touches the sensor head.

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