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Service bulletin 123

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10019606
Published by NHTSA2006-04-03
Manufacturer's number123
Manufacturer's date2006-02-01
NHTSA componentPOWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM)

NHTSA's summary

TCL LIGHT ON AND DIAGNOSTIC TROUBLE CODE U1120-2004-ON GALANT & ENDEAVOR, 2006-ON ECLIPSE. *AK

The document

No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.

Components

Transmission and driveline, Automatic transmission, Transmission control module

Trouble codes named

U1120

Vehicles listed
MITSUBISHI ECLIPSE2006
MITSUBISHI ENDEAVOR2004
MITSUBISHI GALANT2004

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Other bulletins for the same vehicles and component
1372007-06-18. Service bulletin. REPROGRAMMING THE PCM DRIVABILITY OR SENSITIVITY ISSUES CAN BE CORRECTED. *KB
06130062006-07-11. Service bulletin. INCORRECT SOFTWARE PARAMETERS IN THE PCM MAY CAUSE THE MIL TO ILLUMINATE AND DIAGNOSTIC TROUBLE CODE P0335 AND/OR P0340 (CRANKSHAFT OR CAMSHAFT POSITION SENSOR CIRCUIT) TO SET IN THE PCM. *TT
05230042005-10-04. Service bulletin. 2-3 SHIFT FLARE. *TT
1152005-08-10. Service bulletin. TRANSAXLE GEAR WHINE. MITSUBISHI TECH TALK. *TT
1162005-08-02. Service bulletin. DIAGNOSTIC TROUBLE CODE (DTC) P0133/153 REFLASH. MITSUBISHI TECH TALK. *TT
1162005-08-02. Service bulletin. POWERTRAIN CONTROL MODULE (PCM) REPROGRAMMING. MITSUBISHI TECH TALK. *TT
05130052005-07-13. Service bulletin. POWERTRAIN CONTROL MODULE (PCM) REPROGRAMMING FOR DIAGNOSTIC TROUBLE CODE (DTC P0174). *TT
1132005-07-08. Service bulletin. TRANSAXLE GEAR WHINE. *TT
050120042005-05-02. Service bulletin. SPORTRONIC SHIFT INOPERATIVE. *EH
050120042005-05-02. Service bulletin. DELAYED A/T SHIFTING. *EH