Bosch 16002 Oxygen Sensor - Downstream, Downstream Rear or Downstream Right

Bosch OE Oxygen Sensor for VW and Audi

Bosch 16002 is an Actual OE Oxygen Sensor built for downstream applications on select Audi, Volkswagen, and Porsche vehicles. It uses a narrow-band heated design to deliver accurate air-fuel-ratio feedback to the ECU for stable closed-loop control and emissions monitoring.

With OE-style fitment, a threaded mounting design, and an included wiring harness, this Bosch oxygen sensor supports direct replacement service on many 2005-2018 Audi A3, A4, A5, A6, Q3, Q5, and Volkswagen Jetta, Golf, GTI, Passat, Tiguan, and CC applications.

• Actual OE Oxygen Sensor from Bosch
• Narrow-band heated sensor for downstream use
• Specific fit replacement with 4-wire configuration
• Threaded mount with 18 mm thread size and 22 mm hex
• Oblong male connector with blade terminals
• Wiring harness included for OE-style service replacement
• Built with high-temperature-resistant materials for harsh exhaust conditions

OE Sensor Line Details

Bosch’s Actual OE Oxygen Sensor line reflects more than five decades of oxygen-sensor development. Bosch moved from early thimble-style sensors to planar narrowband designs that improve light-off response, lambda accuracy, and closed-loop operation. This part number, 16002, follows that OE-focused approach with ceramic sensing elements and controlled heater performance for consistent signal output.

For fitment-based searches, this part is commonly selected for a downstream oxygen sensor replacement on Audi A4, Audi A5 Quattro, Volkswagen Jetta, Volkswagen Passat, and Porsche Cayenne applications. This part cross-references 1K0998262T and 06F906262P for the same application.

Common Problems This Sensor Addresses

• Check engine light related to oxygen sensor performance
• Incorrect air-fuel ratio readings sent to the ECU
• Rough idle or unstable closed-loop fuel control
• Emissions test failure caused by a worn downstream sensor
• Slow sensor response from heat cycling and exhaust exposure

Installation Notes and Tips

Verify the connector shape, wire length, and downstream position before installation. Bosch 16002 uses a threaded 18 mm mount and a 4-wire heated narrow-band layout, so matching the original sensor style is important for proper operation. Inspect the exhaust bung threads and wiring routing during replacement, especially on Audi Q3, Audi Q5, Volkswagen Tiguan, and Volkswagen GTI applications.

Compatible With 2005-2018 Audi A3, A4, A5, A6, Q3, Q5, and A3 Quattro; Volkswagen Beetle, CC, Eos, Golf, GTI, Jetta, Passat, Tiguan, Touareg, and Passat CC; and Porsche Cayenne downstream positions listed in the fitment data.

Quality Assurance

Bosch supplies this oxygen sensor as an OE-proven replacement backed by decades of original-equipment development and aftermarket support. The design uses durable materials, heater control, and narrow-band sensing technology to maintain consistent performance under thermal and vibration load.