Description
Part number 4A0907404C is a genuine used, tested Engine ECU Control Module for the Audi 100 (C4/4A-series), the refined executive saloon and Avant that Audi produced from 1990 through to 1994, a model renowned for its longitudinally mounted engines and quattro all-wheel-drive variants.
This ECU governs the engine management system, co-ordinating fuel mixture enrichment, ignition timing, exhaust emissions control, and adaptive corrections based on coolant temperature, throttle position, and oxygen sensor feedback. It is responsible for maintaining efficient combustion under all operating conditions.
Common signs of ECU failure on this platform include hard cold starts, hunting idle, unexpected engine stalling, poor fuel economy, and fault codes stored in the engine management system. Drivers may also notice jerky acceleration or throttle response that feels inconsistent under load.
Removed from a low-mileage written-off donor vehicle and verified against the 4A0907404C OEM specification, this module has passed functional testing before being listed. We recommend fitting by a qualified technician familiar with Audi VAG systems, as programming or variant coding may be necessary. A 14-day return window 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/
