Delphi ES20396 Oxygen Sensor - Rear

Delphi ES20396 Heated Oxygen Sensor Overview

The Delphi ES20396 is a heated oxygen sensor designed specifically for the rear position on Nissan Maxima models. This sensor plays a critical role in monitoring exhaust gases to optimize engine performance and emissions control.

• Heated sensor type for faster response times
• 4-wire configuration ensuring accurate signal transmission
• Square connector shape for secure and reliable connection
• Thread size of 18 x 1.5 mm for precise fitment
• Overall length of 575.0 mm to accommodate rear exhaust placement
• Includes oxygen sensor and instruction sheet for installation guidance

Technical Details and Compatibility

The Delphi ES20396 oxygen sensor features a heated element that allows it to reach operating temperature quickly, improving fuel efficiency and reducing emissions. Its 4-wire design supports both the sensor signal and heater circuit, ensuring consistent performance. The square connector shape is engineered for a secure fit, minimizing the risk of disconnection or signal loss. With a thread size of 18 x 1.5 mm, this sensor is designed to fit the rear exhaust port of Nissan Maxima vehicles precisely. The overall length of 575.0 mm provides the necessary reach for proper installation in the rear position.

Applications and Problem Resolution

This oxygen sensor is compatible with Nissan Maxima models requiring a rear heated oxygen sensor. It is commonly used to address issues such as:

• Check engine light triggered by faulty oxygen sensor readings
• Poor fuel economy due to incorrect air-fuel mixture data
• Increased emissions failing regulatory standards
• Engine performance problems related to exhaust gas monitoring
• Failed emissions tests caused by sensor malfunction

Installation Notes and Tips

When installing the Delphi ES20396 oxygen sensor, ensure the vehicle is cool to avoid burns. Use the included instruction sheet for proper wiring and torque specifications. Verify the square connector is fully seated to prevent electrical issues. It is recommended to apply anti-seize compound on the threads to facilitate future removal. Always clear diagnostic trouble codes after installation to reset the engine control unit.

Quality Assurance and Warranty

Delphi oxygen sensors are manufactured to meet OEM specifications, ensuring reliable performance and durability. The ES20396 part number undergoes rigorous testing for accuracy and longevity. While specific warranty details may vary, Delphi typically offers coverage against defects in materials and workmanship to provide confidence in your purchase.