A20-033

Service Bulletin
20-033
August 31, 2020
Version 1
MIL On with DTC P26A3
AFFECTED VEHICLES
Year
Model
Trim Level
VIN Range
2014
Accord Plug-In Hybrid
ALL
ALL
SYMPTOM
The MIL is on with DTC P26A3 (electric water valve malfunction).
PROBABLE CAUSE
A malfunction in the climate control unit software causes improper control of the three-way valve.
CORRECTIVE ACTION
Update the PGM-FI software, and replace the climate control unit.
PARTS INFORMATION
Part Name
Part Number
Quantity
Auto Air Conditioner Control Assembly
79600-T3V-A42ZA
1
WARRANTY CLAIM INFORMATION
The normal warranty applies.
Operation
Number
Description
Flat Rate
Time
Defect
Code
Symptom
Code
Template
ID
Failed Part Number
1255G0
Update the PGM-FI
software, and
replace the climate
control unit.
1.0 hr
03214
03217
A20033A
37805-5K0-A15
Skill Level: Repair Technician
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.
© 2020 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
1.006.004 or later
HDS Software Version
3.104.002 or later
J2534 Rewrite Software Information
PC Application Version
1.2.1.1
Database Update
19-AUG-2020 or later
NoticeDB Version
19-AUG-2020 or later
Update only the systems and software listed in this service bulletin.
American Honda has validated and approved the Denso DST-I as the vehicle communication interface (VCI) to
support this service bulletin.
For more information about updating vehicle systems, refer to service bulletin 01-023, Updating Control Units/Modules.
Year/Model
Vehicle System
2014 Accord Plug-In Hybrid
PGM-FI
Program ID (or later)
37805-5K0-A15
REPAIR INFORMATION
NOTICE
•
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.
NOTE
This update will not require entering a service bulletin number.
1. Clear DTC P26A3 using the i-HDS.
2. Update the PGM-FI software using the J2534 Rewrite software with the DST-i. Refer to service bulletin
01-023, Updating Control Units/Modules.
3. Replace the climate control unit. Refer to the service information.
END
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