B23-010

Service Bulletin
March 14, 2023
23-010
Version 1
Software Update DTC P0300, P0301, P0302, P0303, P0304, or P0172
AFFECTED VEHICLES
Year
Model
Trim
VIN Range
2019–2023
RDX
ALL
ALL
2021–2023
TLX
ALL (Except Type S)
ALL
BACKGROUND
Under certain circumstances, the vehicle may experience driveability concerns. This may result in the following DTC’s to
set:
•
P0300 (Random Misfire Detected),
•
P0301 (No. 1 Cylinder Misfire Detected),
•
P0302 (No. 2 Cylinder Misfire Detected),
•
P0303 (No. 3 Cylinder Misfire Detected),
•
P0304 (No. 4 Cylinder Misfire Detected),
•
P0172 (Fuel System Too Rich).
CUSTOMER NOTIFICATION
Do an iN VIN status inquiry to make sure the vehicle is shown as eligible.
CORRECTIVE ACTION
Reset the maintenance minder light and replace only the oil. Clear any DTC’s and update the PGM-FI software with the
latest version. Reset the throttle position learned values and do the PCM idle learn procedure.
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.
© 2023 American Honda Motor Co., Inc. — All Rights Reserved
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WARRANTY CLAIM INFORMATION
The normal warranty applies.
Operation
Number
Description
Flat Rate
Time
Defect
Code
Symptom
Code
Template
ID
Failed Part Number
1255D8
Update PGM-FI
software (includes DTC
clear)
0.2 hr
03214
03217
B23010A
37805-5YF-AH2
1255D8L
Reset the throttle
position value and idle
learn procedure
0.2 hr
03214
03217
B23010A
37805-5YF-AH2
1255D8K
Replace the oil
0.3 hr
03214
03217
B23010B
37805-5YF-AH2
PARTS INFORMATION
Part Name
Part Number
Quantity
Drain Plug Washer (14mm)
94109-14000
1
Part Name
Part Number
Quantity
0W-20 (Bulk Oil Participants) Gallon
FS020-BAS-N0L
RDX - 1.15
MATERIAL INFORMATION
TLX - 1.05
0W-20 (Non-Bulk Oil Participants) Quarts
08798-9063
5
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
1.007.013 or later
HDS Software Version
3.104.047 or later
Honda ECU Reprogramming
3.0.6.0
J2534 Rewrite Version
1.00.0034
J2534 Rewrite Database Update
20221224_2490
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.
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RDX
Year
Trim
Software System
Program ID (or later)
2019
ADV (SH-AWD)
PGM-FI
37805-5YF-C740
2019
ADV (2WD)
PGM-FI
37805-5YF-C540
2019
A-Spec (SH-AWD), Base (SHAWD), Tech (SH-AWD)
PGM-FI
37805-5YF-C840
2019
A-Spec (2WD), Base (2WD),
PGM-FI
37805-5YF-A940
Tech (2WD)
2020
ADV (SH-AWD)
PGM-FI
37805-5YF-A270
2020
ADV (2WD)
PGM-FI
37805-5YF-A170
2020
A-Spec (SH-AWD), Base (SHAWD), Tech (SH-AWD)
PGM-FI
37805-5YF-A470
2020
A-Spec (2WD), Base (2WD),
PGM-FI
37805-5YF-A370
Tech (2WD)
2021
ADV (2WD)
PGM-FI
37805-5YF-C150
2021
Advance (SH-AWD), LTD (PMC) PGM-FI
(SH-AWD)
37805-5YF-C250
2021
A-Spec (SH-AWD), Base (SHAWD), Tech (SH-AWD)
PGM-FI
37805-5YF-C450
2021
A-Spec (2WD), Base (2WD),
PGM-FI
37805-5YF-C350
Tech (2WD)
2022
ADV (SH-AWD)
PGM-FI
37805-5YF-AA30
2022
Base (SH-AWD), Tech (SHAWD)
PGM-FI
37805-5YF-AB30
2022
Base (2WD), Tech (2WD)
PGM-FI
37805-5YF-AC30
2022
A-Spec ADV (SH-AWD), ADV
(SH-AWD)
PGM-FI
37805-5YF-AD30
2022
A-Spec (SH-AWD)
PGM-FI
37805-5YF-AE30
2022
A-Spec (2WD)
PGM-FI
37805-5YF-AF30
2023
ADV (SH-AWD)
PGM-FI
37805-5YF-AG20
2023
Base (SH-AWD), Tech (SHAWD)
PGM-FI
37805-5YF-AH20
2023
Base (2WD), Tech (2WD)
PGM-FI
37805-5YF-AJ20
2023
A-Spec ADV (SH-AWD), ADV
(SH-AWD)
PGM-FI
37805-5YF-AK20
2023
A-Spec (SH-AWD)
PGM-FI
37805-5YF-AL20
2023
A-Spec (2WD)
PGM-FI
37805-5YF-AM20
Page 3 of 4
TLX
Year
Trim
Software System
Program ID (or later)
2021
ADV (2WD)
PGM-FI
37805-6S8-A570
2021
ADV (SH-AWD)
PGM-FI
37805-6S8-A770
2021
A-Spec (SH-AWD), Base (SHAWD), Tech (SH-AWD)
PGM-FI
37805-6S8-A870
2021
A-Spec (2WD), Base (2WD),
Tech (2WD)
PGM-FI
37805-6S8-A670
2022
ADV (2WD)
PGM-FI
37805-6S8-A920
2022
Base (2WD), Tech (2WD), A-
PGM-FI
37805-6S8-AA20
Spec (2WD)
2022
ADV (SH-AWD)
PGM-FI
37805-6S8-AB20
2022
A-Spec (SH-AWD), Base (SHAWD), Tech (SH-AWD)
PGM-FI
37805-6S8-AC20
2023
ADV (2WD)
PGM-FI
37805-6S8-AH20
2023
A-Spec (2WD), Base (2WD),
PGM-FI
37805-6S8-AJ20
Tech (2WD)
2023
ADV (SH-AWD)
PGM-FI
37805-6S8-AK20
2023
A-Spec (SH-AWD), Base (SH-
PGM-FI
37805-6S8-AL20
AWD), Tech (SH-AWD)
REPAIR PROCEDURE
1. Reset the maintenance minder light A.
NOTE: The maintenance minder light may not reset after the update is complete. Reset the maintenance minder
first.
2. Drain and refill the engine oil. Do not replace the oil filter.
NOTE: RDX - 4.6 quarts and TLX - 4.2 quarts
3. Connect the i-HDS to the vehicle.
4. Update the PGM-FI using the i-HDS.
5. Reset the throttle position learned values then do the PCM idle learn procedure. Refer to the service information for
additional instructions.
NOTE: More information on this procedure can be found in the Tech2Tech video titled, A Look at PCM Idle Learn.
END
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