Mitsubishi Eclipse 2004–2006 — technical service bulletin
Bulletin 123 · NHTSA communication 10019606 · issued Feb 1, 2006
Technical service bulletin
communication type
Power Train
component
2004–2006
model years
3
vehicle entries
Official summary
Tcl light on and diagnostic trouble code u1120-2004-on galant & endeavor, 2006-on eclipse. *ak
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.