P0422 on the 2017 Mack Granite
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.
| KC-164 | 2021-12-07. Service bulletin. Mack Chassis - Diagnostic Trouble Code ( DTC ) P0422 Lighting The Malfunction Indicator Light ( MIL ) - US14+OBD15 And US14+OBD16 Emissions, Common Model Years 2016 And 2017 |
|---|---|
| K14003352 | 2018-03-19. Service bulletin. Diagnostic Trouble Code ( DTC ) P0422 Lighting The Malfunction Indicator Light ( MIL ) - US17 (GHG17), Common Rail Fuel System ONLY, Updated programming and diagnostic instructions |
2 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.