Mass Air Flow Sensors

More commonly known as MAF sensor or air meter, the mass airflow sensor has one very important job; measuring the amount of air entering the engine for an optimal air-fuel ratio. Without this information, the ECU will not be able to accurately control fuel injection, resulting in an engine that will either idle roughly or worst case, not at all. But don’t worry! We’ve been producing OE MAF sensors since the 1970s. Today, we hold more than 30 patents in MAF sensing technology and signal processing, and have delivered more than 50 million OE MAF sensors for over 500 customer applications. So why not try us for your aftermarket needs too.

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Innovative OE design

We build our OE expertise into every MAF sensor we make. Featuring a proprietary temperature compensation design, they offer outstanding performance over a wide range of ambient temperatures. And are fast to respond to changing engine conditions – typically less than 15 milliseconds to respond to 90 percent of a flow change. Innovative, dual-heated elements on specific references also help to ensure optimal performance, fuel efficiency, and reduced emissions

OE engineered and tested

By testing and calibrating to OE specifications, our MAF sensors provide the same accurate readings and airflow output as the OE. Each sensor is tested on state-of-the-art sonic nozzle-testing equipment capturing over 6,000 data points per flow, for optimal calibration accuracy. They’re also flow tested to match the OE for signal stability (noise), temperature compensation (the ability of the MAF sensor to measure airflow accurately from -30°C to 70°C) and electromagnetic compatibility.

Never remanufactured MAF sensor

Some things are better new. That’s why every sensor we make – whether with or without the housing—is built with all-new components and never remanufactured. Remanufactured MAFs are simply cleaned and tested, so any contamination on the sensor may not be eliminated, resulting in inaccurate readings to the ECU.

Greener probe-only technology

It’s often the electronics on the sensor probe that fail, meaning it’s not always necessary to replace the complete part. So we developed a probe-only solution, in addition to a full range of complete units. By eliminating the plastic housing, this provides a greener, more cost-effective and faster repair option.

The complete package

With Delphi you get access to the complete package: the range, advanced DS diagnostics including the ability to look at live data, both at idle and max RPM, to determine if the MAF sensor is reporting the correct data, expert training and support and vehicle technical information including wiring diagrams, component locations and guided diagnostic procedures.

The Delphi Difference

100 years of OE experience, supplier to the world’s top automakers
OE heritage and knowledge built into every aftermarket part
Comprehensive portfolio for a wide range of vehicles and model years
Streamlined SKUs for easy inventory management
Support through tools, tips and training

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How to replace a DPF sensor

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Resource Highlights

A DPF sensor is crucial for exhaust systems and emissions levels. Learn how to replace one to industry standards.

How do I remove the DPF sensor?

Firstly, you’ll need to remove the engine cover. Next, remove the electrical connector from the sensor by putting pressure on the connector and press it in. Now lift the tab and you should be able remove it with a pull. Lastly, you’ll need to remove the pipework from the sensor before you take it out.

How do I remove the pipework?

Unscrew the retaining screw from the sensor. Once you’ve done this you can start work on unfixing the pipework. Using a pair of pliers, loosen the clips from the pipework. Now, slide the pipework off the sensor.

How do I visually inspect the new part?

Simply put the old and new parts next to each other and check that the barbs are the same diameter and the electrical keyways are the same.

How do I fit the new part?

Essentially, do what you’ve just done in reverse. When it comes to fitting the clips to the pipework, use the pliers again making sure the clips are snug and not too close to the edge. Relocate the sensor into the clip, place it against the backing plate and put the retaining screw back in. Now, reattach the electrical connector, pushing down firmly until you hear a click that lets you know it’s secure. Replace the engine cover and use a diagnostic tool to erase any fault codes and check live data.