Mitsubishi Lancer 2011 — technical service bulletin
Bulletin TSB-13-13-002REV · NHTSA communication 10172187 · issued Mar 19, 2013
Technical service bulletin
communication type
Engine and Engine Cooling
component
2011
model years
3
vehicle entries
Official summary
Improper Secondary Parameter judgement criteria may cause false MIL illumination during 3rd Oxygen Sensor Monitoring (P0145). This TSB provides a field fix procedure to address false MIL illumination with DTC P0145 (Heated oxygen sensor (3rd) circuit slow response) stored in the ECM. This software update optimizes the judgement criteria to minimize false MIL illumination.
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.