Toyota Corolla 2003–2008 — technical service bulletin
Bulletin 04507 · NHTSA communication 10023619 · issued Oct 27, 2007
Technical service bulletin
communication type
Engine and Engine Cooling
component
2003–2008
model years
12
vehicle entries
Official summary
M.i.l. (on) dtc p0171, p030# and/or p0133 engine running lean in subfreezing ambient temperatures. *nj
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.