Description
The part number 4B0907401R identifies this genuine Audi A6 C5 Engine ECU Control Module, sourced from a written-off executive saloon or Avant. Fully bench-tested against C5 platform parameters, the unit has been confirmed functional and dispatched only after passing pre-sale checks.
Managing one of the A6 C5’s petrol powertrains through Bosch Motronic ME7.1, this ECM governs fuel injection, ignition timing, idle speed control, throttle positioning, and exhaust lambda feedback. It coordinates with the A6’s CAN bus network, including the transmission, ABS, and instrument cluster modules.
ECU failure on the A6 C5 may surface as rough idling or stalling, difficulty starting particularly when the engine is warm, unexplained limp mode activation, loss of power under load, or stored fault codes relating to injector output stages or sensor plausibility errors.
This is a used, tested unit. Cross-check OEM number 4B0907401R against your vehicle data card or VIN-matched parts lookup before ordering. Professional installation is advised. Adaptation coding and basic settings reset via VCDS may be necessary. 14-day returns apply.
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/
