The Benefits of 5-Wire Oxygen Sensors

The Benefits of 5-Wire Oxygen Sensors

Mobiletron discusses the launch of its new range of 5-wire oxygen (Lambda) sensors. 


The main advantage of using a 5-wire oxygen sensor is that it gives an exact reading as to what degree of rich or lean the fuel mix is, using the current sensing cell. Vehicles that use the 4-wire sensors can only send a basic signal to the ECU, which can recognize that the fuel mix is lean or rich, but not by how much.

A more sophisticated sensor

The 5-wire lambda sensor sends a more complex message to the ECU. The signal no longer simply tells the ECU that the fuel mix is rich or lean; its signal gives the ECU a constant and variable voltage from zero to five volts, with zero indicating an extremely lean mixture, and five volts indicating a very rich mixture. This enables the engine to maintain a better air-to-fuel mixture, because the ECU can adjust fuel injection according to the measurements provided by the oxygen sensor. By adjusting the fuel mix to the optimum level, the engine will run more effectively and the emissions of the vehicle will be reduced.

Using a 5-wire sensor will help to increase fuel economy as a result of the sensor mediating the optimum fuel mix, and the vehicle will perform better due to a lower carbon build-up in the engine.

Marketing Manager Mark Wilson added, “Mobiletron identified a gap in the market for 5-wire oxygen sensor suppliers after receiving many enquiries from our customers. The addition of these new products allows us to cover this gap caused by the limited aftermarket supply.”

The addition of the 5-wire sensors takes Mobiletron’s total oxygen sensor vehicle coverage to over 89%, and has added 70 new product lines to its current oxygen sensor range. The company’s total coverage of oxygen sensors is over 650 parts, covering almost 15,000 vehicles.

Benefits to factors

A key reason motor factors should be looking to stock these sensors is because of the demand that Mobiletron expect to see. They expect these new products to be a very popular seller. Many of the most popular UK vehicles will contain the 5-wire sensor.

The 5-wire sensor is a much more sophisticated product than the 4-wire, which makes it an easier sell for factors. The 5-wire sensors are generally fitted to more premium vehicles, meaning that there is generally a higher profit margin available to the factor. Mobiletron now stock over 100 5-wire sensors that are readily available for next- day delivery.

Some of the popular models covered by the new 5-wire sensors are:

BMW: 1 Series E87, 3 Series E90
Citroen: Berlingo, C3, C4, DS3 and DS4
Mini: R56, R57, R55
Peugeot: 206, 2008, 208, 3008, 308
Vauxhall: Astra MK5, Vectra, Zafira


For more applications, click here

Related posts