Bosch 17190 Oxygen Sensor - Upstream

Bosch Wideband O2 Sensor for OE Fitment

Bosch 17190 is an Actual OE Oxygen Sensor built for precise air-fuel ratio monitoring on select Volkswagen and Audi applications. This wideband, heated upstream sensor delivers continuous lambda measurement for accurate engine management, cleaner emissions, and stable drivability.

Compatible with 2015-2018 Audi A3 Quattro, 2015-2018 Audi S3, 2016-2018 Audi TT Quattro, 2016-2018 Audi TTS Quattro, 2015-2018 Volkswagen Golf R, 2015-2018 Volkswagen GTI, 2017-2020 Audi A3, 2018-2024 Volkswagen Tiguan, 2018-2023 Volkswagen Atlas, 2020-2023 Volkswagen Atlas Cross Sport, and 2022 Audi Q3 in the upstream position.

Key Features

• Wide-band sensor type for high-precision air-fuel ratio feedback
• Heated design for faster sensor warm-up and stable operation
• Specific fit with included wiring harness for OE-style replacement
• Threaded mounting with 18 mm thread diameter and 22 mm hex size
• 5-wire, blade-terminal construction with oblong connector shape
• Robust metal housing for demanding underhood conditions
• Bosch Actual OE Oxygen Sensor line for OE-proven application coverage

Product Details

Bosch 17190 uses wideband sensing technology to provide the ECU with detailed air-fuel ratio data across the full lambda range. That level of signal detail supports accurate fuel control during idle, cruise, acceleration, and rapid load changes. Bosch’s OE development background is reflected in the sensor’s planar pump-cell design, optimized heater control, and durable ceramic construction. This part cross-references Bosch OE-style numbers 06K906262CS and 8V0906262D for the same application.

Common Issues This Sensor Can Help Address

• Check engine light related to upstream oxygen sensor performance
• Rough idle or inconsistent air-fuel mixture control
• Poor fuel economy caused by inaccurate sensor feedback
• Reduced engine response from delayed or unstable sensor readings
• Emissions test failures tied to faulty wideband O2 data

Installation Notes and Tips

Install Bosch 17190 in the upstream location only where listed in the fitment data. Verify connector shape, wire count, and thread size before installation, and inspect the harness routing to avoid heat damage or strain. Because this is a specific-fit sensor, confirm the vehicle application by year, make, model, and position before ordering. For Volkswagen Tiguan upstream oxygen sensor replacement or Audi A3 upstream wideband O2 sensor service, matching the OE connector and harness length is important for proper routing.

Quality Assurance

Bosch supplies this Actual OE Oxygen Sensor with OE-level engineering and application-specific construction. The Bosch 17190 is built for reliable signal accuracy, consistent heater performance, and long-term service in modern engine management systems.