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Part number 045906019BQ is a genuine <a href="/brand/Seat“>Seat Ibiza engine control unit for the 1.4 TDI diesel, removed from a running vehicle and individually bench-tested before despatch.
This ECU oversees the 1.4 TDI diesel management cycle — controlling common-rail injection pressure, injection timing, pilot pulse events, exhaust gas recirculation, glow-plug pre-heat duration, and turbocharger boost regulation — to maintain the Ibiza’s diesel economy and low-emission output across all driving conditions.
Signs of ECU failure on the Ibiza 1.4 TDI include sluggish performance from cold, premature entry into limp mode, excessive white smoke at start-up that clears slowly, fuel trim codes that persist despite injector cleaning, or a no-start condition where glow and fuel systems check out mechanically sound.
This is a used, tested OEM part matched to the original factory specification. A qualified technician should perform the installation; VCDS or equivalent VAG software will be required for immobiliser adaptation and coding.
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/
