Toyota Prius 2004–2005 — technical service bulletin
Bulletin 02704 · NHTSA communication 10010308 · issued Oct 18, 2004
Technical service bulletin
communication type
Engine and Engine Cooling
component
2004–2005
model years
2
vehicle entries
Official summary
Malfunction indicator lamp on with diagnostic trouble code p3191, p3190 and/or p0a0f. *tt this bulletin supercedes eg027-04 dated 07/14/04. *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.