Description
With OEM reference 7793863, this Engine ECU Control Module was purpose-built by BMW for the E46 3 Series. Sourced from a written-off vehicle and confirmed operational through diagnostic evaluation, this genuine used unit provides a reliable path to restoring your 3 Series to full running order.
Fuel delivery precision in the E46 3 Series hinges on the ECM interpreting signals from knock sensors, lambda probes, and the mass airflow sensor to calculate exact injection pulse widths and ignition advance angles. The module simultaneously manages idle speed control, evaporative emissions purge, and secondary air injection to maintain regulatory compliance.
Drivers experiencing ECM-related issues in the E46 3 Series may report a rough, fluctuating idle, unexpected engine stalling, poor cold-start performance, or repeated misfires across the rev range. Fault codes stored in the ECM memory often point directly to the module itself or to sensor input faults it has detected.
Sold as a used, tested part — verify OEM number 7793863 matches your vehicle before placing an order. We strongly recommend professional fitting, and coding or adaptation to your car’s existing electronics may be required post-installation. This item carries a 14-day return entitlement.
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/
