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Evaporative Emissions System Leak Detection Pump - Audi (420-906-201)
2008-2015 Audi R8 - 420-906-201
Review Fitment & Product Details
Details
- Brand:
- SKU:
420-906-201
- Other Names:
Evaporative Emissions System Leak Detection Assembly, Leak Detect Pump, Detection Pump, Pump, Ldpump
- Description:
Coupe. Leak detection pump. Without spyder. R8. Evaporative emission. Listed under Audi part number 420-906-201, this Evaporative Emissions System Leak Detection Pump keeps the exhaust and evaporative streams within regulated limits, and because the engine management strategy adapts around these components, a degraded unit affects drivability as well as emissions compliance. It is supplied through the Audi dealer parts network and matches the component installed at the factory. Fitment varies by model year, trim, and option content, so verify before ordering.
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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 420-906-201: a check engine lamp, failed emissions inspection, fuel smell around the vehicle, reduced power or a regeneration warning on diesel applications, or a rattle from a broken internal substrate. If several of these appear together, diagnose the assembly as a whole rather than one part. |
| TROUBLESHOOTING | Diagnosis on vehicles using 420-906-201 should start here: read freeze frame data along with the code, since an efficiency fault often traces back to an upstream misfire, oil consumption, or leak rather than the emissions component itself. A scan tool with Audi specific coverage will show considerably more than a generic code reader. |
| INSTALLATION | Service replacement of 420-906-201 requires all upstream faults to be corrected first, otherwise the same condition that destroyed the original component will destroy the replacement. Follow the Audi repair manual procedure and torque specifications for the specific model and year. |
| MAINTENANCE | Maintenance for this emissions component (420-906-201) means keeping the engine in good tune, using the correct fuel, and completing regeneration cycles rather than interrupting them on diesel applications. A short inspection at each service keeps small issues from becoming large ones. |
| GENERAL_NOTES | Key consideration for 420-906-201: emissions components are federally regulated and may carry a separate warranty period from the balance of the vehicle. Availability and part number supersession can change, so confirm the current number when ordering. |
| FAULT_CODES | Fault codes commonly stored when this component fails, applicable to part 420-906-201: P0441, P0442, P0443, P0455, and P0456 covering evaporative emission purge flow, valve circuit, and small or large leak detection. |
| REPLACEMENTS | Associated components for the 420-906-201 repair: gaskets, clamps, hangers, and affected oxygen sensors are renewed with the component to guarantee a sealed, leak free installation. Check the repair manual for the full list of single use fasteners for this procedure. |
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