Volvo 420 1994–2023 — technical service bulletin
Bulletin KC-784 · NHTSA communication 10209840 · issued Mar 23, 2022
Technical service bulletin
communication type
Electrical System
component
1994–2023
model years
60
vehicle entries
Official summary
Volvo Chassis - Diagnostic Trouble Code ( DTC ) P0420 Illuminating The Malfunction Indicator Lamp (MIL)
Vehicles covered
- 1999 Volvo 420
- 1996 Volvo 600 Series
- 1997 Volvo 600 Series
- 1998 Volvo 600 Series
- 1999 Volvo 600 Series
- 2000 Volvo 600 Series
- 1998 Volvo 660
- 1999 Volvo 660
- 2000 Volvo 660
- 2001 Volvo 660
- 2005 Volvo 660
- 1996 Volvo 700 Series
- 1997 Volvo 700 Series
- 1998 Volvo 700 Series
- 1999 Volvo 700 Series
- 2000 Volvo 700 Series
- 1998 Volvo 770
- 1999 Volvo 770
- 2000 Volvo 770
- 2001 Volvo 770
- 2004 Volvo 780
- 2011 Volvo 780
- 2016 Volvo 780
- 1994 Volvo AC
- 1995 Volvo AC
- 1996 Volvo AC
- 1997 Volvo AC
- 1998 Volvo AC
- 1999 Volvo AC
- 2000 Volvo AC
- 2001 Volvo AC
- 1994 Volvo Acl
- 1995 Volvo Acl
- 1996 Volvo Acl
- 1997 Volvo Acl
- 1998 Volvo Acl
- 1999 Volvo Acl
- 2000 Volvo Acl
- 1997 Volvo Aero
- 1994 Volvo Autocar
- 1995 Volvo Autocar
- 1996 Volvo Autocar
- 1997 Volvo Autocar
- 1998 Volvo Autocar
- 2001 Volvo Cross Country
- 1994 Volvo FE
- 1995 Volvo FE
- 1996 Volvo FE
- 1997 Volvo FE
- 1998 Volvo FE
- 2003 Volvo FM
- 1994 Volvo Heavy Truck
- 1995 Volvo Heavy Truck
- 1996 Volvo Heavy Truck
- 1997 Volvo Heavy Truck
- 1998 Volvo Heavy Truck
- 1999 Volvo Heavy Truck
- 2000 Volvo Heavy Truck
- 2001 Volvo Heavy Truck
- 2002 Volvo Heavy Truck
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.