Dodge Ram 1500 2003 — technical service bulletin
Bulletin 10182004 · NHTSA communication 10013981 · issued Oct 18, 2004
Technical service bulletin
communication type
Electrical System
component
2003
model years
3
vehicle entries
Official summary
Added diagnostics for p0421 and p0431. *eh
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.