Toyota Tacoma 1996–1999 — technical service bulletin
Bulletin EG01199 · NHTSA communication 610061 · issued Oct 15, 1999
Technical service bulletin
communication type
Engine and Engine Cooling
component
1996–1999
model years
4
vehicle entries
Official summary
Information introducing design changes to the 5vz oxygen sensor to reduce possibility of moisture contacting the ceramic element. *tt
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.