Delphi ES20169 Oxygen Sensor - Rear, Rear Left or Rear Right

Delphi ES20169 Rear Oxygen Sensor

Delphi ES20169 is a heated oxygen sensor built for rear sensor locations on select Audi, Porsche, and Volkswagen applications. It uses a 4-wire design, flat connector shape, and 18 x 1.5 mm thread size for direct-fit replacement where the vehicle calls for a 940.0 overall length.

Key Features

• Heated oxygen sensor for rear, rear left, and rear right positions
• 4-wire configuration with flat connector shape
• 18 x 1.5 mm thread size
• 940.0 overall length for listed applications
• Includes oxygen sensor and instruction sheet
• Built with Delphi OE heritage and aftermarket application knowledge

Detailed Description

Delphi ES20169 is an emission control oxygen sensor intended for rear exhaust monitoring on select 2002-2009 vehicles. It is listed for the Audi A8 Quattro, Audi TT Quattro, Porsche Cayenne, Volkswagen Phaeton, Volkswagen Touareg, Volkswagen Golf, Volkswagen Jetta, Volkswagen Passat, and Volkswagen R32, with position-specific coverage depending on the application. This part number is also referenced as ES20169 in replacement searches for rear oxygen sensor service on these platforms.

Delphi draws on long OE experience supplying major automakers, and that background is reflected in the sensor design and application coverage. For buyers searching for a rear oxygen sensor for Audi A8 Quattro, Volkswagen Touareg rear left, or Volkswagen Passat rear right service, ES20169 provides a direct replacement path when the connector, thread, and length match the vehicle requirements.

This part cross-references Bosch 16586 and DENSO Auto Parts 234-4808 for the same application.

What It Helps Address

• Check engine light related to rear oxygen sensor performance
• Incorrect air-fuel feedback from a failing heated O2 sensor
• Emissions test failures tied to sensor response issues
• Rough idle or drivability concerns caused by inaccurate exhaust readings
• Fault codes associated with rear sensor circuit or heater operation

Installation Notes and Tips

Verify the vehicle position before ordering, since this sensor is listed for rear, rear left, and rear right locations depending on the application. Confirm the 940.0 overall length, 4-wire layout, flat connector shape, and 18 x 1.5 mm thread size against the original part. Review the application tab for the exact fitment on your Audi, Porsche, or Volkswagen model before installation.

Quality Assurance

Delphi builds aftermarket parts using OE experience and supplier knowledge developed over decades of original-equipment service. ES20169 reflects that OE-based approach for rear oxygen sensor replacement on the listed applications.