Date Model Control unit address (e.g. 01) Diagnostic procedure
22.2.2026 Leon (KL) 2021 -> 01 - Engine Customer limitation of maximum speed
22.2.2026 Leon (KL) 2021 -> 01 - Engine Creation of readiness
22.2.2026 Leon (KL) 2021 -> 01 - Engine Evacuation of fuel tank
22.2.2026 Leon (KL) 2021 -> 01 - Engine Bleeding of fuel system
22.2.2026 Leon (KL) 2021 -> 01 - Engine Test of gas pedal position sensor 1; 2 (G79; G185)
22.2.2026 Leon (KL) 2021 -> 01 - Engine Test of filling pressure
22.2.2026 Leon (KL) 2021 -> 01 - Engine Test / activation of fuel pump and control relay
22.2.2026 Leon (KL) 2021 -> 01 - Engine Test - engine control unit (J623) - power supply
22.2.2026 Leon (KL) 2021 -> 01 - Engine Test - throttle actuator
22.2.2026 Leon (KL) 2021 -> 01 - Engine Test - injector 1-4 (N30;N31;N32;N33)
22.2.2026 Leon (KL) 2021 -> 01 - Engine Test - fuel pump: control unit (J538)
22.2.2026 Leon (KL) 2021 -> 01 - Engine Test of radiator fan control unit (J293)
22.2.2026 Leon (KL) 2021 -> 01 - Engine Test - Neutral gear sensor (G701)
22.2.2026 Leon (KL) 2021 -> 01 - Engine Test of engine temperature sensor - outlet from radiator (G83)
22.2.2026 Leon (KL) 2021 -> 01 - Engine Test of fuel temperature sensor (G81)
22.2.2026 Leon (KL) 2021 -> 01 - Engine Test of engine temperature sensor (G62)
22.2.2026 Leon (KL) 2021 -> 01 - Engine Test of intake air temperature sensor (G42)
22.2.2026 Leon (KL) 2021 -> 01 - Engine Test of filling and atmospheric pressure sensor (G31)
22.2.2026 Leon (KL) 2021 -> 01 - Engine Activation - fuel pump (G6)
22.2.2026 Leon (KL) 2021 -> 01 - Engine Basic settings - adaptation - Test: throttle valve
 
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