P0420 on the 2017 Volkswagen Golf
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.
| VIN-4-A-PIN Sept | 2019-04-08. Service bulletin. MIL-on P0420 and/or P0430 in the ECM |
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| VIN-4-A-PIN Sept | 2019-04-08. Service bulletin. MIL-on P0420 and/or P0430 in the ECM |
| VIN-4-A-PIN Sept | 2019-04-08. Service bulletin. MIL-on P0420 and/or P0430 in the ECM |
| VIN-4-A-PIN Sept | 2019-04-08. Service bulletin. MIL-on P0420 and/or P0430 in the ECM, MIL-on P0463 and B103E1B stored |
| On-car-analysis- | 2019-04-08. Service bulletin. MIL-on P0420 and/or P0430 in the ECM |
| On-car-analysis- | 2019-04-08. Service bulletin. MIL-on P0420 and/or P0430 in the ECM |
| On-car-analysis- | 2019-04-08. Service bulletin. MIL-on P0420 and/or P0430 in the ECM |
| VIN-4-A-PIN Sept | 2019-04-08. Service bulletin. MIL-on P0420 and/or P0430 in the ECM |
| VIN-4-A-PIN Sept | 2019-04-08. Service bulletin. MIL-on P0420 and/or P0430 in the ECM |
| VIN-4-A-PIN Sept | 2019-04-08. Service bulletin. MIL-on P0420 and/or P0430 in the ECM |
21 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.