Description
The part number 8D0907558A belongs to a genuine Audi A4 B5 Engine ECU Control Module. Extracted from a written-off B5 saloon or Avant, this unit carries the 8D chassis prefix common to both the A4 B5 and the wider VAG PL45 platform. Bench-tested and confirmed operational before listing.
In the 8D0907558 series, this ECU coordinates diesel or petrol combustion management on the B5 platform, handling injection event scheduling, turbocharger boost control on TDI variants, exhaust gas recirculation, and MAF-based airflow compensation. Bosch EDC15 or Motronic ME7 architecture applies depending on engine code.
ECU faults on the A4 B5 can lead to heavy smoke at start-up on TDI engines, hesitation or flat spots on petrol variants, stalling when warm, long cranking times, limp mode activation, or multiple sensor-related fault codes appearing simultaneously during a diagnostic scan.
This is a used and tested unit. Match OEM number 8D0907558A to your exact vehicle, engine, and production year before purchase. Professional installation is recommended. VCDS coding, injection quantity adaptation, and immobiliser alignment will be required. 14-day returns are accepted.
Returns accepted only for genuine faults — faulty on arrival, not as described, or wrong part supplied — requested within 14 days, with all 3 anti-tamper stickers intact. No returns for change of mind, incorrect installation, coding/programming, or buyer compatibility errors; checking compatibility (OEM number, firmware, vehicle) is the buyer’s responsibility. Full policy: https://giantparts.eu/refund-and-returns/
