P0401 on the 2020 Volkswagen Passat
The bulletins listed name this code in NHTSA's summary, or are about the same components. A bulletin or a recall listed here may apply to the model year. None of it is a diagnosis.
Nobody has written a description of this code yet.
| VIN4APIN20211026 | 2021-11-05. Service bulletin. Customer states MIL-on with P0087 P0149 P053F in the ECM Customer states MIL-on with any combination of P0300, P0301, P0302, P0303, P0304, P1D74 and/or P1D75 in the ECM Customer states rattle noise from the underbody heat shields Customer states noise from front suspension Customer states noise during clutch pedal operation Customer concern of vehicle door hard to close/out of adjustment Customer states airbag light on Customer states no crank/no start. Vehicle is towed in. Customer states there is a popping/clicking noise while operating temperature settings Customer states MIL-on with P0401 |
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| VIN4APIN20210930 | 2021-10-06. Service bulletin. Customer states MIL-on with P0087 P0149 P053F in the ECM Customer states noise from front suspension Customer states noise during clutch pedal operation Customer concern of vehicle door hard to close/out of adjustment Customer states no crank/no start. Vehicle is towed in. Customer states there is a popping/clicking noise while operating temperature settings Customer states MIL-on with P0401 |
| VIN4APIN20210922 | 2021-10-06. Service bulletin. Customer states MIL-on with P0087 P0149 P053F in the ECM Customer states noise from front suspension Customer states noise during clutch pedal operation Customer states no crank/no start. Vehicle is towed in. Customer states there is a popping/clicking noise while operating temperature settings Customer states MIL-on with P0401 |
| VIN4APIN20210913 | 2021-10-06. Service bulletin. Customer states MIL-on with P0087 P0149 P053F in the ECM Customer states noise during clutch pedal operation Customer states no crank/no start. Vehicle is towed in. Customer states there is a popping/clicking noise while operating temperature settings Customer states MIL-on with P0401 |
| VIN4APIN20210909 | 2021-10-06. Service bulletin. Customer states MIL-on with P0087 P0149 P053F in the ECM Customer states noise during clutch pedal operation Customer states no crank/no start. Vehicle is towed in. Customer states there is a popping/clicking noise while operating temperature settings Customer states MIL-on with P0401 |
| VIN4APIN20210907 | 2021-10-06. Service bulletin. Customer states MIL-on with P0087 P0149 P053F in the ECM Customer states noise during clutch pedal operation Customer states no crank/no start. Vehicle is towed in. Hood release inoperative Customer states there is a popping/clicking noise while operating temperature settings Customer states MIL-on with P0401 |
| VIN4APIN20200803 | 2020-09-03. Service bulletin. Customer states MIL-on with P0496 Customer states MIL-on with U0284 Customer states oil leak from the engine Customer states oil leak from the engine Customer states MIL-on with P0111 Customer states MIL-on with P2407 "Customer states MIL-on with P11A1/P11A2/P11A3/P11A4/P11A5/P11A6/P11A7/P11A8/ P11A9/P11AA/P11AB/P11AC/P11AD/P11AE/P11AF/P11B0" Customer states rattle noise from under vehicle Customer states MIL-on, HPFP mounting bolts loose/broken No crank, no start Driver seat heater inoperative Customer states both headlights are cracked Customer states noise heard when adjusting air distribution on HVAC controls Wind noise from front doors Customer states MIL-on with P0401 |
| VIN4APIN20200728 | 2020-08-06. Service bulletin. Customer states MIL-on with P0496 Customer states MIL-on with U0284 Customer states oil leak from the engine Customer states oil leak from the engine Customer states MIL-on with P0111 Customer states MIL-on with P0442 Customer states MIL-on with P2407 "Customer states MIL-on with P11A1/P11A2/P11A3/P11A4/P11A5/P11A6/P11A7/P11A8/ P11A9/P11AA/P11AB/P11AC/P11AD/P11AE/P11AF/P11B0" Customer states MIL-on, HPFP mounting bolts loose/broken No crank, no start Driver seat heater inoperative Customer states both headlights are cracked Customer states noise heard when adjusting air distribution on HVAC controls Wind noise from front doors Customer states MIL-on with P0401 |
| VIN4APIN20200724 | 2020-08-06. Service bulletin. Customer states MIL-on with P0496 Customer states MIL-on with U0284 Customer states oil leak from the engine Customer states oil leak from the engine Customer states MIL-on with P0111 Customer states MIL-on with P0442 Customer states MIL-on with P2407 "Customer states MIL-on with P11A1/P11A2/P11A3/P11A4/P11A5/P11A6/P11A7/P11A8/ P11A9/P11AA/P11AB/P11AC/P11AD/P11AE/P11AF/P11B0" Customer states MIL-on, HPFP mounting bolts loose/broken No crank, no start Customer states both headlights are cracked Customer states noise heard when adjusting air distribution on HVAC controls Wind noise from front doors Customer states MIL-on with P0401 |
| VIN4APIN20200720 | 2020-08-06. Service bulletin. Customer states MIL-on with P0496 Customer states MIL-on with U0284Customer states oil leak from the engine Customer states oil leak from the engine Customer states MIL-on with P0111Customer states MIL-on with P0442 Customer states MIL-on with P2407 "Customer states MIL-on with P11A1/P11A2/P11A3/P11A4/P11A5/P11A6/P11A7/P11A8/ P11A9/P11AA/P11AB/P11AC/P11AD/P11AE/P11AF/P11B0" Customer states MIL-on, HPFP mounting bolts loose/broken No crank, no start Customer states both headlights are cracked Customer states noise heard when adjusting air distribution on HVAC controls Wind noise from front doors Customer states MIL-on with P0401 |
15 on file from NHTSA, as of 2026-10-19. See them in the bulletin list. A bulletin lists model years: read the document for which vehicles it concerns.