Related Products
Mass Air Flow Sensor - Audi (420-133-471)
2010-2023 Audi - 420-133-471
- MSRP: $431.67
- Discount: $120.87 (28% off)
- Sale Price: $310.80
- MSRP: $431.67
Review Fitment & Product Details
Details
- Brand:
- SKU:
420-133-471
- Other Names:
Air Mass Sensor, Sensor
- Description:
R8. 5.2l. 5.2L, Coupe, auto trans. 5.2L, Coupe, manual trans. Diesel. A8. 3.0l. Tdi. 5.2L, convertible, auto trans. 5.2L, convertible, manual trans. This factory Audi Mass Air Flow Sensor (420-133-471) converts a physical condition into a signal the engine control module uses to set fueling and timing, so a drifting sensor degrades performance long before it triggers a hard fault. It is supplied through the Audi dealer parts network and matches the component installed at the factory. Use the fitment guide or contact our parts team to confirm the correct application.
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WARNING: Cancer and reproductive harm - www.P65Warnings.ca.gov Pricing is valid online only and may vary in your local store
Vehicle Fitment
Vehicle Fitment
| Year | Make | Model | Body & Trim | Engine & Transmission |
|---|
Key Product Information
Additional Information
| SYMPTOMS | Typical failure symptoms reported on vehicles fitted with 420-133-471: a check engine lamp, rough running or hesitation, poor fuel economy, hard starting, or a fault that appears only at specific temperatures or loads. If several of these appear together, diagnose the assembly as a whole rather than one part. |
| TROUBLESHOOTING | Verify the fault before ordering 420-133-471: compare the sensor's live value against a known good reference at the same conditions rather than trusting the code alone, and check wiring and connector integrity before condemning the sensor. If the fault is intermittent, check wiring and connectors before the component itself. |
| INSTALLATION | Correct installation of this sensor (420-133-471) calls for careful handling of the sensing element, correct torque, and routing the harness clear of heat sources and moving components. Allow for the published labor time and any post installation calibration or coding. |
| MAINTENANCE | Ongoing maintenance where 420-133-471 is fitted requires no scheduled service, but keeping the intake and connectors clean and dry extends sensor life considerably. Following the Audi maintenance schedule is the cheapest insurance against a larger repair. |
| GENERAL_NOTES | Fitment note for this sensor (420-133-471): some sensors require an adaptation or basic setting procedure with a scan tool after installation before the module will use the new signal correctly. Genuine Audi parts are built to the original specification, so fit, finish, and function match the factory component. |
| FAULT_CODES | Fault codes commonly stored when this component fails, applicable to part 420-133-471: P0100 through P0104 for mass air flow circuit range, performance, and intermittent faults. Lean codes P0171 and P0174 frequently appear alongside them when the meter under reports airflow. |
| REPLACEMENTS | Associated components for the 420-133-471 repair: sealing washers, O-rings, and damaged connector pins are addressed at the same time to keep the signal circuit clean. Confirm the related part numbers against the vehicle identification number. |
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