Date Model Control unit address (e.g. 01) Diagnostic procedure
21.1.2025 Passat B7 (PQ46) 01 - Engine Customer limitation of maximum speed
21.1.2025 Passat B7 (PQ46) 01 - Engine Start/stop - activation/deactivation
21.1.2025 Passat B7 (PQ46) 01 - Engine Test of the condition of the diesel particulate filter - oil ash
21.1.2025 Passat B7 (PQ46) 01 - Engine Reducing agent SCR - AD-Blue - status check
21.1.2025 Passat B8 (MQB/PQ48) 01 - Engine Adaptation - pressure difference sensor - exhaust recirculation
21.1.2025 Passat B8 (MQB/PQ48) 01 - Engine DPF regeneration
21.1.2025 Passat B8 (MQB/PQ48) 01 - Engine Clogging of diesel particulate filter - oil Ash
21.1.2025 Passat B8 (MQB/PQ48) 01 - Engine Test - idle stabilization
21.1.2025 Passat B8 (MQB/PQ48) 01 - Engine Temperature sensors test
21.1.2025 Passat B8 (MQB/PQ48) 01 - Engine Test: clutch pedal - pedal switch
21.1.2025 Passat B8 (MQB/PQ48) 01 - Engine Test - additive pump SCR AD-Blue (V437)
21.1.2025 Passat B8 (MQB/PQ48) 01 - Engine Test - filling pressure control valve (N75) CUUx variant 2
21.1.2025 Passat B8 (MQB/PQ48) 01 - Engine Test - filling pressure control valve (N75) CUUx variant 1
21.1.2025 Passat B8 (MQB/PQ48) 01 - Engine Test - exhaust recirculation CUUx
21.1.2025 Passat B8 (MQB/PQ48) 01 - Engine Basic settings - exhaust gas flap
21.1.2025 Passat B8 (MQB/PQ48) 01 - Engine Zeroing learning values - Low-pressure exhaust gas return valve
21.1.2025 Passat B8 (MQB/PQ48) 01 - Engine Zeroing learning values - cylinders: pressure sensor
21.1.2025 Passat B8 (MQB/PQ48) 01 - Engine Measurement of compression pressure
21.1.2025 Passat B8 (MQB/PQ48) 01 - Engine Basic settings - Zero detection of SRC additive level
21.1.2025 Passat B8 (MQB/PQ48) 01 - Engine Zeroing learning values: additive injection system