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NTK Lambda Sensor - UAA0004-FA007

NTK Lambda Sensor - UAA0004-FA007

The NTK oxygen sensor UAA0004-FA007 is designed to ensure the optimum control of your vehicle's ai...

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Product Information

Full details

The NTK Lambda Sensor UAA0004-FA007 is an essential component for automotive enthusiasts and DIY mechanics looking to restore or maintain precise engine management. This sensor is designed to provide the engine control unit with accurate air-fuel ratio data, ultimately improving fuel economy and reducing tailpipe emissions, though users should be aware that proper installation is critical to avoid premature failure of both the sensor and the downstream catalytic converter.

All features

Model Part NumberUAA0004-FA007
BrandNTK

Extended Product Information

FAQs

Can I touch the sensor tip with my fingers?

No, you should avoid touching the ceramic sensing element with bare hands, as oils from your skin can contaminate the sensor and degrade its performance.

Does this sensor come with pre-applied anti-seize?

Most NTK sensors feature pre-applied anti-seize on the threads; if yours does not, ensure any added compound is specifically designed for oxygen sensors.

How often should a lambda sensor be replaced?

While there is no fixed interval, most manufacturers suggest checking performance every 50,000 to 80,000 miles to maintain optimal fuel efficiency.

Will this fix a failed emissions test?

If your vehicle is failing emissions due to a faulty oxygen sensor reading, this part can help resolve that issue, provided there are no other mechanical exhaust leaks.

Is it necessary to reset the ECU?

While the ECU will eventually adapt to the new sensor, manually clearing the codes is recommended to ensure the vehicle exits 'limp mode' immediately.

Troubleshooting

Check Engine light remains on after installation

Clear the diagnostic trouble codes (DTCs) using an OBD-II scanner and drive the vehicle through several cycles to allow the ECU to relearn the new sensor's data.

Sensor signal is flat-lining on diagnostic tools

Check the wiring harness connection for corrosion and ensure the connector is fully seated and locked.

Pros and Cons

Pros

  • Significantly improves fuel efficiency
  • Reduces harmful exhaust emissions
  • Directly supports catalytic converter health
  • Highly durable construction for harsh under-hood environments

Cons

  • Requires professional-grade tools for proper installation
  • Sensitive to contamination during handling
  • Vehicle-specific compatibility must be confirmed before purchase

Setup, Compatibility & Care

Before installation, always verify the part number UAA0004-FA007 matches your specific vehicle make and model by consulting the manufacturer's parts catalog. Ensure the engine is cool to the touch to prevent burns. When installing, use a proper oxygen sensor socket to prevent damage to the wire harness. Do not use standard anti-seize compound on the threads unless it is specifically rated as oxygen-sensor-safe, as improper chemicals can ruin the sensing element. Keep the sensor tip clean and free of grease or silicone residue before inserting it into the exhaust manifold or pipe.

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