Guide to the 2012-2018 Audi A7 Quattro Manifold Absolute Pressure Sensor
Learn about MAP sensor problems in your supercharged A7 and how to choose the right aftermarket replacement part.
- A failing MAP sensor will cause poor fuel economy, rough idle, and power loss, often with a P0106 trouble code.
- For best results and reliability, choose an OEM-equivalent brand like Bosch, which is an original supplier to Audi.
- The A7 3.0T engine uses two pressure sensors; they are located on the sides of the supercharger.
- Ensure the replacement is a 4-pin sensor that includes the integrated air temperature sensor function.
Symptoms of a Failing MAP Sensor in Your A7
When a MAP sensor starts to fail, it sends incorrect data to the engine's computer. This can cause a range of noticeable problems. You might experience a rough or erratic idle, hesitation when you accelerate, and a general loss of power. Many owners also report a significant drop in fuel economy. Eventually, these issues will trigger the Check Engine Light on your dashboard.
Common Trouble Code: A very common diagnostic trouble code (DTC) associated with a failing MAP sensor is P0106. This code specifically points to a problem with the MAP sensor's performance or range, meaning the signal it's sending is not what the computer expects to see.
🎬 Learn how MAP sensors work and how to fix them.Choosing the Right Aftermarket MAP Sensor
When replacing the MAP sensor on your A7, you have several aftermarket brands to choose from. Since this sensor is vital for engine performance, quality matters. Sticking with brands that are known Original Equipment (OE) suppliers for Audi and other German vehicles is a safe bet.
Brand Quality Tiers
- Premium (OEM-Equivalent): Brands like Bosch are often the original manufacturer for Audi's own parts. Choosing a Bosch sensor is the closest you can get to buying the part from an Audi dealer, often at a lower price. Hella is another well-regarded German OE supplier.
- Quality Aftermarket: Brands such as Delphi, NGK, and Standard Ignition (SMP) have a solid reputation for producing reliable sensors that meet or exceed OE specifications. Walker Products also offers a range of sensors for this vehicle.
- Value-Oriented: Brands like Facet, Spectra, and others offer a more budget-friendly option. While functional, they may not have the same long-term durability or precise calibration as premium brands. For a high-performance vehicle like the A7, investing in a premium or quality aftermarket sensor is generally recommended to avoid future issues.
| Part Type | Estimated Price Range |
|---|---|
| New OEM (Dealer) | $90 - $130 |
| New Aftermarket | $35 - $160 |
| Shop Labor | $50 - $100 |
Pro Tip: The MAP sensor on the 3.0T engine often integrates an Intake Air Temperature (IAT) sensor into the same unit. Ensure the replacement part you purchase is the correct 4-pin sensor that includes this function.
Known Issues, Recalls, and Service Bulletins
While there are no specific recalls for the MAP sensor itself on the 2012-2018 Audi A7, there have been recalls for other sensors and related components. For example, a recall was issued for the passenger occupant detection sensor in the front seat. Another recall concerned a fuel line that could leak. There was also a TSB for the 2.5L engine (not the A7's 3.0T) related to a P0106 code, often caused by a dirty MAP sensor or throttle body. These issues are not directly related to MAP sensor failure but show the importance of overall vehicle maintenance.
Frequently Asked Questions (FAQ)
Where is the MAP sensor located on the 2012-2018 Audi A7?
The Audi A7 3.0T engine has two pressure sensors that are often referred to as MAP sensors. They are located on either side of the supercharger, toward the back of the engine. You will likely need to remove the engine cover and air filter box to access them.
Can I clean the MAP sensor instead of replacing it?
Sometimes, a MAP sensor can become contaminated with oil or carbon buildup, causing a P0106 code. You can try cleaning it with a dedicated electronic parts or MAF sensor cleaner. However, if the sensor's internal electronics have failed, cleaning will not solve the problem and replacement will be necessary.
What happens if I don't replace a bad MAP sensor?
Ignoring a faulty MAP sensor will lead to persistent poor engine performance, including rough running, bad fuel mileage, and potential stalling. Over time, running with an incorrect air-fuel mixture can lead to more serious engine problems, such as damage to the catalytic converter.
Is a Bosch aftermarket sensor the same as the genuine Audi part?
Bosch is a major Original Equipment Manufacturer (OEM) for many Audi parts. This means the Bosch sensor you buy from an aftermarket retailer is often the exact same part that would be put in an Audi box and sold at the dealership, just without the Audi logo and associated markup.
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Technical Specifications
OEM Part Numbers: 03C906051F 03C906051 038906051J 06E906051AC 06E906051AG 06E906051AB
The sensor is typically a 4-pin design that integrates both the manifold absolute pressure sensor and an intake air temperature sensor. It measures a pressure range of approximately 10 kPa to 117 kPa.
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The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.
- Audi A7 Quattro: