Description
Part number 4B1907401B identifies this genuine Audi A6 C5 Engine ECU Control Module. Recovered from a low-mileage written-off vehicle, it has been bench-tested against A6 C5 parameters and confirmed fully operational before listing.
Managing the A6 C5 through the Bosch Motronic system, this unit controls ignition advance, injection pulse width, lambda feedback, and idle speed regulation. It interfaces with the immobiliser, instrument cluster, and transmission control module via the CAN bus network.
Common signs of ECU failure on the A6 C5 include intermittent stalling, difficulty starting from cold, erratic fuelling, sudden power loss, or a stored fault code pointing to ECU internal memory or driver stage faults.
Supplied as a used, tested unit. Verify that OEM number 4B1907401B matches your car before purchase. Fitting by a qualified technician is advised. Immobiliser adaptation and channel coding via VCDS or equivalent may be necessary. 14-day returns policy applies.
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/
