Description
Listed here is OEM part 4A0907404A — a genuine used, tested Engine ECU Control Module for the Audi 100 C4 series (Type 4A), the large executive saloon that bridged Audi’s classic and modern eras before the Audi A6 replaced it in 1994.
The ECU controls the complete engine management cycle, including sequential fuel injection, ignition map selection, lambda regulation via the upstream oxygen sensor, and cold-start enrichment strategies. It communicates with the instrument cluster and immobiliser system to enable normal engine operation.
When this module begins to fail, owners may experience rough running at idle, hesitation on acceleration, elevated emissions at MOT, or spontaneous loss of engine power during motorway driving. Stored fault codes pointing to sensor plausibility errors can sometimes be traced back to a degraded ECU rather than the sensor itself.
This part was recovered from a written-off Audi 100 and tested to confirm full functionality against the 4A0907404A specification. Installation by a competent auto-electrician or Audi specialist is advised; the unit may require software coding to match the recipient vehicle. Returns are accepted within 14 days of delivery.
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/
