Description
The 038906018S is a factory diesel engine management module from the VAG Group’s 1.9-litre TDI engine family — one of the most widely produced diesel units in European automotive history, fitted across a broad range of Audi, Volkswagen, SEAT and Škoda models. This ECU manages all key diesel engine functions for the applicable TDI variant, including injection quantity and timing, common-rail pressure, EGR valve operation and turbocharger boost control.
The 1.9 TDI ECU operates within a Bosch EDC or Siemens VDO architecture depending on engine code, reading data from the fuel rail pressure sensor, boost pressure sensor, EGR position sensor, crankshaft sensor and intake temperature probe to compute precise injection parameters. This close management of injection events is central to the 1.9 TDI’s characteristically strong low-speed torque and its long-standing reputation for economy and reliability across high mileages.
On 1.9 TDI-engined Audi models, ECU-related faults often present as the engine entering limp mode with power and boost cut above 2,000 rpm, intermittent starting failures in cold weather despite functional glowplugs, stalling at idle under load conditions, or repeated fault codes for EGR or boost deviation that reappear after the hardware has been inspected and found serviceable.
This is a genuine used OEM unit sourced from a 1.9 TDI-engined Audi and tested before listing. Used diesel ECUs from the TDI range require programming and immobiliser adaptation using VCDS or equivalent VAG-compatible diagnostics. Cross-reference this number with your current ECU and arrange professional installation.
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/
