Saturn L200 2000–2005 — technical service bulletin
Bulletin 040604008 · NHTSA communication 10006167 · issued Oct 1, 2004
Technical service bulletin
communication type
Engine and Engine Cooling
component
2000–2005
model years
8
vehicle entries
Official summary
Service engine soon (ses) lamp illuminated with dtc p0135 ho2s heater circuit performance bank 1 sensor 1 and/or dtc p0155 ho2s heater performance bank 2 sensor 1. *mr this bulletin replaces previous 04-06-04-008. *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.