Audi Mass Airflow Sensor Service Bulletin: Comprehensive Guide for Affected Owners
If you own a 2009-2016 Audi model with a 2.0-liter Evo2 engine, your vehicle may be experiencing performance issues related to a faulty mass airflow (MAF) sensor. This widespread concern has prompted an official service bulletin from Audi to address engine hesitation, rough idling, and acceleration problems in several popular models.
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Key Symptoms of a Failing Mass Airflow Sensor
Owners of affected vehicles typically report one or more of these common symptoms:
- Rough engine idle - The engine may shake or vibrate excessively at stop lights or when parked
- Acceleration hesitation - A noticeable stumble or lag when pressing the accelerator
- Reduced engine performance - Lack of power during normal driving conditions
- Erratic RPM fluctuations - The tachometer may show unusual spikes or drops
- Check engine light illumination - Often accompanied by MAF-related diagnostic trouble codes
Complete List of Affected Audi Models and Years
The following 2009-2016 Audi vehicles equipped with the 2.0-liter Evo2 engine are included in this service bulletin (TSB No. 241551):
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Passenger Cars
- Audi A4 Sedan and Avant (2009-2016)
- Audi A5 Coupe and Sportback (2009-2016)
- Audi A5 Cabriolet (2009-2016)
- Audi A6 Sedan and Avant (2009-2016)
- Audi TT Coupe and Roadster (2009-2016)
Crossovers and Wagons
- Audi Allroad (2009-2016)
- Audi Q5 (2009-2016)
Understanding the Technical Service Bulletin
Technical Service Bulletin (TSB) 241551 addresses a known issue with the mass airflow sensor in these Audi vehicles. Unlike a safety recall, a TSB provides repair instructions to dealerships for common problems reported by owners and technicians.
Why MAF Sensors Fail in These Audi Models
The mass airflow sensor is a critical component that measures the amount of air entering the engine. In affected Audi vehicles, the sensor may:
- Provide inaccurate readings due to contamination
- Fail prematurely due to electrical issues
- Develop calibration problems over time
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Official Repair Procedure
Audi dealerships will perform the following corrective actions:
- Connect the vehicle to Audi diagnostic equipment to confirm MAF sensor-related fault codes
- Inspect the sensor and related wiring for visible damage
- Replace the mass airflow sensor with an updated part if malfunction is confirmed
- Clear all fault codes and verify proper operation through a road test
Warranty Coverage Information
Audi is covering this repair under one of the following warranty programs:
- New Vehicle Limited Warranty - For models still within the 4-year/50,000-mile coverage
- Extended Warranty - For certified pre-owned or extended warranty holders
- Federal Emissions Warranty - Coverage may extend up to 8 years/80,000 miles for emissions-related components
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What If Your Vehicle Is Out of Warranty?
If your Audi is no longer covered under warranty, you may still benefit from:
- Goodwill repairs from Audi for vehicles slightly out of warranty
- Potential class action lawsuit settlements (check current status)
- Aftermarket solutions at independent repair shops (typically more affordable than dealership pricing)
Steps for Audi Owners to Take
If you're experiencing symptoms or want to check if your vehicle is included:
1. Contact an Authorized Audi Dealership
Call your local Audi service center with your Vehicle Identification Number (VIN) ready. The service advisor can:
- Verify if your specific vehicle is affected
- Check warranty coverage status
- Schedule an appointment for diagnosis
2. Alternative Contact Options
- Audi Customer Service: 800-822-2834
- NHTSA Vehicle Safety Hotline: 888-327-4236
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Finding a Qualified Audi Repair Facility
While dealerships perform warranty repairs, you have options:
- Use MotorVero's dealer locator to find authorized service centers
- Search for independent Audi specialists with proper diagnostic equipment
- Verify technician certifications (ASE or Audi-specific training)
Preventive Maintenance Tips for MAF Sensors
To extend the life of your new or replacement mass airflow sensor:
- Always use high-quality air filters and replace them regularly
- Avoid cleaning the MAF sensor with inappropriate chemicals
- Address any engine air leaks promptly
- Follow Audi's recommended maintenance schedule
Understanding Service Bulletins vs. Recalls
It's important to distinguish between these two types of manufacturer communications:
| Service Bulletin (TSB) | Safety Recall |
|---|---|
| Addresses common repair issues | Corrects safety-related defects |
| Repairs may be warranty-covered | Always free to consumer |
| Not mandatory for all vehicles | Required for all affected vehicles |
Additional Resources for Audi Owners
Stay informed about your vehicle's service needs:
- Regularly check Audi's official service bulletin database
- Monitor NHTSA recall announcements
- Join Audi owner forums for community experiences
- Subscribe to MotorVero's maintenance alerts
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Final Recommendations
If your Audi exhibits any symptoms of MAF sensor failure:
- Don't ignore the symptoms - prolonged issues can affect other engine components
- Verify your vehicle's inclusion in this service bulletin
- Take advantage of warranty coverage if available
- Document all repairs for your records
Remember that addressing this issue promptly can restore your Audi's performance and prevent more costly repairs down the road.
