NHTSA ID Number: 10200367
Manufacturer Communication Number: B21-028
TSB/Document Date: 2021-08-13
Summary
Service Bulletin - The MIL comes on with DTC P061B (PCM Internal Malfunction) is stored.
Service Bulletin
21-028
August 6, 2021
Version 1
MIL Comes On With DTC P061B
AFFECTED VEHICLES
Year
Model
VIN Range
2019–20
RDX
ALL
ALL
SYMPTOM
The MIL comes on with DTC P061B (PCM Internal Malfunction) is stored.
POSSIBLE CAUSE
During cold engine startup in high altitudes, the boost pressure and engine speed can increase rapidly setting DTC
P061B.
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
1255B3
Update the PGM-FI
Software
0.2 hr
03214
03217
B21028A
37805-6B2-A59
CLIENT 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 Acura
automobile dealer.
©
2021 American Honda Motor Co., Inc. — All Rights Reserved
Page 1 of 3
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
1.006.035 or later
HDS Software Version
3.104.030 or later
J2534 Rewrite Software Information
PC Application Version
1.2.1.1
Database Update
21-JUL-2021 or later
NoticeDB Version
21-JUL-2021 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 01-026, Updating Control Units/Modules.
Year/Model
Vehicle System
Program ID (or later)
2019 RDX Advance (SH-AWD)
PGM-FI
37805-5YF-C730
2019 RDX Advance
PGM-FI
37805-5YF-C530
2019 RDX A-Spec, Base, Tech
PGM-FI
37805-5YF-A930
2019 RDX A-Spec (SH-AWD), Base (SH-AWD), Tech PGM-FI
(SH-AWD)
37805-5YF-C830
2020 RDX Advance (SH-AWD)
PGM-FI
37805-5YF-A260
2020 RDX Advance
PGM-FI
37805-5YF-A160
2020 RDX A-Spec, Base, Tech
PGM-FI
37805-5YF-A360
2020 RDX A-Spec (SH-AWD), Base (SH-AWD), Tech PGM-FI
(SH-AWD)
37805-5YF-A460
Page 2 of 3
REPAIR PROCEDURE
NOTE:
•
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.
Update the PGM-FI software using the J2534 Rewrite software with the DST-i. Refer to service bulletin 01-026, Updating
Control Units/Modules.
END
Page 3 of 3
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TSB/Document ID: B21-028
Replacement Service Bulletin Number:
MFR Communication Date: 2021-08-06
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Communication Type: Service Bulletin/Repair Instructions
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