Bosch 17245 Oxygen Sensor - Upstream

Bosch Wideband OE Oxygen Sensor

Bosch 17245 is a specific-fit wideband air-fuel oxygen sensor for precise upstream mixture monitoring. It is listed for 2011-2015 Volkswagen Jetta upstream applications and uses a heated, 5-wire design with a 6-terminal connector for direct replacement service.

The Bosch Actual OE Oxygen Sensor line focuses on OE-style accuracy and durable construction for modern engine management systems. Bosch 17245 follows that approach with a planar wideband design, fast light-off behavior, and controlled heater operation for stable signal output across changing load and temperature conditions.

Key Features

• Wideband A/F oxygen sensor for continuous air-fuel ratio measurement
• Heated design with optimized heater control
• Specific fit for direct replacement service
• 5-wire harness with included wiring harness
• Oblong male connector, blade terminals, 6-terminal layout
• Threaded mounting with 18 mm thread diameter and 22 mm hex size
• Metal housing for OE-style durability

Detailed Description

Bosch 17245 is built for upstream exhaust monitoring on 2011-2015 Volkswagen Jetta models. As a wideband oxygen sensor, it provides the ECU with more detailed air-fuel ratio data than a traditional switching sensor, helping the engine management system maintain accurate mixture control under varying driving conditions. The Bosch Actual OE Oxygen Sensor line is backed by Bosch OE development experience and uses the same type of sensor architecture trusted in modern emissions systems.

This part cross-references Bosch 06G906262F for the same application.

What It Helps Address

• Check engine light related to upstream oxygen sensor performance
• Incorrect air-fuel ratio readings
• Rough idle or drivability issues tied to mixture control
• Reduced fuel economy from inaccurate sensor feedback
• Elevated emissions from poor combustion control

Installation Notes and Tips

Verify upstream placement before installation and confirm connector shape, terminal count, and thread size match the original sensor. The sensor uses an 18 mm thread size and threaded mounting, so proper removal and installation tools are recommended. Inspect the harness routing and connector condition before final assembly on Volkswagen Jetta applications.

Quality Assurance

Bosch supplies OE-developed oxygen sensors to the aftermarket with a focus on measurement accuracy, heater control, and durable ceramic construction. Bosch 17245 is built to OE-style standards for direct replacement use on listed Volkswagen Jetta applications.