Toyota Corolla 2003 — technical service bulletin
Bulletin 01102 · NHTSA communication 633889 · issued Jun 7, 2002
Technical service bulletin
communication type
Unknown OR Other
component
2003
model years
2
vehicle entries
Official summary
Malfunction inidicator light on condition with diagnostic trouble code p0136 and p0420 stored in the engine control module (ecm). *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.