A22-009

Service Bulletin
22-009
April 29, 2022
Version 1
MIL Comes On With DTC P2DE1
AFFECTED VEHICLES
Year
Model
Trim
VIN Range
2021–22
Accord Hybrid
ALL
ALL
SYMPTOM
The MIL comes on with DTC P2DE1 (Cold Start Air Fuel Ratio Control System Rich).
POSSIBLE CAUSE
A new cold start emission reduction strategy was applied to detect air fuel ratio abnormalities. When certain fuel and
vehicle shutoff conditions are present, the LAF sensor may incorrectly judge the air fuel ratio to be rich.
CORRECTIVE ACTION
Update the PGM-FI software.
WARRANTY CLAIM INFORMATION
The normal warranty applies.
Operation
Number
Description
Flat Rate
Time
Defect
Code
Symptom
Code
Template
ID
Failed Part Number
1255D8
Update the PGM-FI
software.
0.2 hr
03214
03217
A22009A
37805-6C2-A54
CUSTOMER INFORMATION:The information in this bulletin is intended for use only by skilled technicians who have the proper tools, equipment, and
training to correctly and safely maintain your vehicle. These procedures should not be attempted by “do-it-yourselfers,” and you should not assume
this bulletin applies to your vehicle, or that your vehicle has the condition described. To determine whether this information applies, contact an
authorized Honda automobile dealer.
©
2022 American Honda Motor Co., Inc. — All Rights Reserved
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SOFTWARE INFORMATION
NOTE: Unnecessary or incorrect repairs resulting from a failure to update the diagnostic and reprogramming software
are not covered under warranty.
Before beginning the repair, make sure all diagnostic and reprogramming software are updated as listed.
i-HDS Software Version
1.006.051 or later
HDS Software Version
3.104.047 or later
J2534 Rewrite Software Information
PC Application Version
1.2.1.1
Database Update
31-JAN-2022 or later
NoticeDB Version
31-JAN-2022 or later
Update only the systems and software listed in this service bulletin.
Do not use the MongoosePRO VCI for this service bulletin as it is not an American Honda-approved device.
For more information about updating vehicle systems, refer to service bulletin 01-023, Updating Control Units/Modules.
Year/Model
Vehicle System
Program ID (or later)
2021
Accord Hybrid
LX/EX/EX-L
PGM-FI
37805-6C2-A540
2022 Accord Hybrid
LX/Sport/EX-L
PGM-FI
37805-6C2-A540
2021–22 Accord
Hybrid Touring
PGM-FI
37805-6C2-A640
SOFTWARE UPDATE PROCEDURE
NOTE:
•
This update will not require entering a service bulletin number.
•
Make sure the 12-volt battery is fully charged before starting an update.
•
Connect a fully charged jumper battery to the vehicle, and leave it connected during the entire procedure to maintain
steady voltage.
•
Do not use the GR8 because the vehicle requires a steady electrical current.
•
Control module failure caused by the improper completion of a software update (early key cycle, low battery voltage,
disconnected DLC cable, etc.) is not covered by warranty.
•
If an error occurs during the update or the i-HDS freezes, do not disconnect the battery or turn the ignition to
OFF. Reboot the i-HDS and start over.
•
To prevent control unit damage, do not operate anything electrical (headlights, audio system, brakes, A/C, power
windows, door locks, etc.) during the update.
•
Warranty reimbursement for technician labor is not allowed for routine checking/installation of any available
software update.
1. Update the PGM-FI software using the J2534 Rewrite software with the DST-i. Refer to service bulletin 01-023,
Updating Control Units/Modules.
END
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