Date Model Control unit address (e.g. 01) Diagnostic procedure
21.1.2025 A8 (4H) D4 (MLB/PQ64) 2010 - 2017 01 - Engine Test - exhaust gas return valve 1 (GX5)
21.1.2025 A8 (4H) D4 (MLB/PQ64) 2010 - 2017 01 - Engine Test - Change-over valve for the cooler of the exhaust gas recirculation
21.1.2025 A8 (4H) D4 (MLB/PQ64) 2010 - 2017 01 - Engine Test - exhaust recirculation - servo motor (V338)
21.1.2025 A8 (4H) D4 (MLB/PQ64) 2010 - 2017 01 - Engine Activation - fuel pump (G6)
21.1.2025 A8 (4H) D4 (MLB/PQ64) 2010 - 2017 01 - Engine Evacuation of fuel tank
21.1.2025 A8 (4H) D4 (MLB/PQ64) 2010 - 2017 01 - Engine Test / activation of fuel pump and control relay
21.1.2025 A8 (4H) D4 (MLB/PQ64) 2010 - 2017 01 - Engine Bleeding of fuel system
21.1.2025 A8 (4H) D4 (MLB/PQ64) 2010 - 2017 01 - Engine Test of pedal switches (cruise control)
21.1.2025 A8 (4H) D4 (MLB/PQ64) 2010 - 2017 01 - Engine Creation of readiness
21.1.2025 A8 (4H) D4 (MLB/PQ64) 2010 - 2017 01 - Engine Automatic test procedure
21.1.2025 A8 (4H) D4 (MLB/PQ64) 2010 - 2017 01 - Engine Deletion of statistics memory - Start-stop
21.1.2025 A8 (4H) D4 (MLB/PQ64) 2010 - 2017 01 - Engine Zeroing learning values - Adaptation of the mean quantity value
21.1.2025 A8 (4H) D4 (MLB/PQ64) 2010 - 2017 01 - Engine Zeroing learning values - Lambda sensor(s)
21.1.2025 A8 (4H) D4 (MLB/PQ64) 2010 - 2017 01 - Engine Zeroing learning values DPF - If replaced: engine control unit/DPF
21.1.2025 A8 (4H) D4 (MLB/PQ64) 2010 - 2017 01 - Engine Zeroing learning values DPF - If replaced: pressure difference sensor (G505)
21.1.2025 A8 (4H) D4 (MLB/PQ64) 2010 - 2017 01 - Engine Zeroing learning values DPF - If replaced: DPF
21.1.2025 A8 (4H) D4 (MLB/PQ64) 2010 - 2017 01 - Engine Injector: corrective value - Test
21.1.2025 A8 (4H) D4 (MLB/PQ64) 2010 - 2017 01 - Engine Customer limitation of maximum speed
21.1.2025 A8 (4H) D4 (MLB/PQ64) 2010 - 2017 01 - Engine Start/stop - activation/deactivation
21.1.2025 A8 (4H) D4 (MLB/PQ64) 2010 - 2017 01 - Engine Test: Reducing agent SCR - Efficiency