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Service bulletin 04021

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 id10012656
Published by NHTSA2005-03-10
Manufacturer's number04021
Manufacturer's date2004-04-30
NHTSA componentPOWER TRAIN:AUTOMATIC TRANSMISSION

NHTSA's summary

AUTOMATIC TRANSMISSION SECOND GEAR INSPECTION. *EH

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

Vehicles listed
HONDA ODYSSEY2002, 2003
HONDA PILOT2003, 2004

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

Recalls for the same vehicles and component
04V1760002004-04-15. POWER TRAIN:AUTOMATIC TRANSMISSION

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
A04-0602019-06-08. Service bulletin. Service Bulletin - PCM replacement for erratic or harsh shifting.
0601052005-12-16. Service bulletin. PILOT- KNOWNGOOD PCM SWAP WITH SIDEWINDER KEY. *JB
060120052005-12-14. Service bulletin. REPLACING A CANON A75 DIGITAL CAMERA TO TAKE INSPECTION PHOTOS FOR S/B 04-021, SAFETY RECALL: A/T 2ND GEAR INSPECTION, OR S/B 04-037, SAFETY RECALL: ACCORD V6 A/T 2ND GEAR INSPECTION. HONDA SERVICENEWS. *TT
4052005-09-08. Service bulletin. AUTOMATIC TRANSMISSION FLUID (ATF) LEAKS. HONDA TECH LINE SUMMARY. *TT
040120052005-09-08. Service bulletin. HISSING BETWEEN 30 AND 50 MPH. HONDA SERVICENEWS. *TT
111620042005-05-04. Service bulletin. BUZZING OR CLICKING NOISE ON HARD ACCELERATION. *EH
2042005-04-29. Service bulletin. AUTOMATIC TRANSMISSION FLUID LEAK AT TORQUE CONVERTER SEAL. *NM
6042005-04-29. Service bulletin. SAFETY RECALL SERVICE BULLETIN 04-021 FAQ. *NM
070120042005-04-27. Service bulletin. TOOLS FOR SAFE AND EFFICIENT A/T REPLACEMENT. *EH
050120042005-04-27. Service bulletin. DON'T REPLACE THE SOLENOID IF TROUBLESHOOTING AN A/T WITH DIAGNOSTIC TROUBLE CODE P0740 (LOCK-UP CONTROL SYSTEM). *NM