Engine and Transmission

Delphi Wide Range Oxygen Sensor

The Delphi Wide Range Oxygen Sensor is an integral component in a gasoline or diesel engine management system, helping provide accurate engine control and system diagnostics. It measures the air⁄fuel ratio of exhaust gases over a wide lambda range. Its five-wire, two-cell design enables higher signal resolution with greater accuracy. An integrated heater and alumina⁄zirconia element facilitate a fast light-off, allowing earlier closed-loop operation compared to conventional conical oxygen sensors.


  • High signal resolution and low pressure sensitivity help provide precise engine control
  • Integral heater enables faster light-off for earlier closed-loop operation
  • Unique planar element design enhances thermal shock resistance
  • Fast response helps improve fuel economy
  • Industry-leading poison-resistant coating helps achieve better durability and truer reading of exhaust gases

Typical OSL Output Curve

Note: The Delphi Wide Range Oxygen Sensor characteristic output is linear to percent oxygen in the exhaust.

Typical Applications

The Delphi Wide Range Oxygen Sensor is an integral part of diesel and gasoline engine management systems where additional control is desirable. With different shielding options, the sensor can be tailored for specific applications in passenger vehicles, commercial vehicles, motorcycles and other engine applications.


In serial production. Samples are available for manufacturers. Contact Delphi for further information.

Performance Advantages

Designed to accommodate a variety of fuel applications, the poison-resistant coating of the Delphi Wide Range Oxygen Sensor helps improve accuracy and durability in harsh exhaust environments, while minimizing deterioration of the sensor characteristics over time. Its uniquely designed planar element technology and integral heater enhance resistance to thermal shock and help the sensor achieve fast light-off to help manufacturers meet current and more stringent future emissions regulations. The sensor's greater accuracy and a fast transient response time help provide greater engine control, and help improve fuel economy and drivability.

The Delphi Advantage

Delphi has one of the industry's most complete portfolios of sensors and a thorough understanding of systems integration. Delphi offers global manufacturing capabilities for sensors and the benefits of more than 30 years' experience in powertrain sensors research and production. Delphi has produced hundreds of millions of exhaust sensors and can provide manufacturers with the necessary support and high quality, high value products tailored to specific customer requirements.

As a global leader in engine management systems technology, Delphi can help manufacturers around the world meet emissions requirements, improve fuel economy and enhance performance. Delphi is a source for high value solutions and our systems expertise is built into every product. Delphi's flexible engineering approach encourages collaboration. And, Delphi has a thorough understanding of automotive markets around the world and a global network of resources.