Dodge Ram 2500 2005 — technical service bulletin
Bulletin 1802805 · NHTSA communication 10015801 · issued Jul 20, 2005
Technical service bulletin
communication type
Engine and Engine Cooling
component
2005
model years
1
vehicle entries
Official summary
Malfunction indicator lamp light with diagnostic trouble code p0430 or p0420 - catalyst efficiency. *tt update. *tt
Vehicles covered
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.