NHTSA ID Number: 10220146
Manufacturer Communication Number: LSB001222
TSB/Document Date: 2022-09-15
Summary
TSB: Some 2019 model year ES 300h and UX 250h vehicles may exhibit a MIL ON condition with Diagnostic Trouble Code (DTC) P019064 (Fuel Rail Pressure Sensor ?A? Signal Plausibility Failure). The Engine Control Module (ECM) (SAE term: Powertrain Control Module/PCM) logic has been modified to reduce the possibility of this condition. Follow the Repair Procedure in this bulletin to address this condition.
L-SB-0012-22
May 6, 2022
MIL ON With DTC P019064
Service
Category
Engine/Hybrid
System
Section
Engine Control
Market USA
Applicability
YEAR(S)
MODEL(S)
2019
ES300H
2019
UX250H
ADDITIONAL INFORMATION
Introduction
Some 2019 model year ES 300h and UX 250h vehicles may exhibit a MIL ON condition with
Diagnostic Trouble Code (DTC) P019064 (Fuel Rail Pressure Sensor “A” Signal Plausibility
Failure). The Engine Control Module (ECM) (SAE term: Powertrain Control Module/PCM) logic has
been modified to reduce the possibility of this condition. Follow the Repair Procedure in this
bulletin to address this condition.
Warranty Information
OP CODE
DESCRIPTION
TIME
OFP
T1
T2
800269
Reprogram ECM (PCM), Perform Drive Pattern
0.7
89661-#####*
8A
99
*Warranty claim MUST be submitted with the correct 10-digit OFP. Choose the correct OFP for the vehicle
being repaired by searching for the parts in the Electronic Parts Catalog using the VIN filter.
APPLICABLE WARRANTY
This repair is covered under the Lexus Federal Emissions Warranty. This warranty is in effect for
96 months or 80,000 miles, whichever occurs first, from the vehicle’s in-service date.
Warranty application is limited to occurrence of the specified condition described in
this bulletin.
© 2021 Lexus, a division of Toyota Motor Sales, USA
Page 1 of 7
L-SB-0012-22
May 6, 2022
Page 2 of 7
MIL ON With DTC P019064
Parts Information
PART NUMBER
MODEL
BATTERY
YEAR
MODEL
ES 300h
2019
UX 250h
NiMH
PREVIOUS
NEW
89661-33W70
89661-33W71
89661-76210
89661-76211
–
All
00451-00001-LBL
PART NAME
QTY
Computer, Engine Control
(ECM/PCM)
–
Authorized
Modifications Labels
1
NOTE
The ECM (PCM) should NOT be replaced as part of the Repair Procedure.
Authorized Modifications Labels may be ordered in packages of 25 from the Materials
Distribution Center (MDC) through Dealer Daily – Parts – Dealer Support Materials Orders.
Required Tools & Equipment
REQUIRED EQUIPMENT
SUPPLIER
PART NUMBER
Techstream ADVI*
QTY
TSADVUNIT
Techstream 2.0
TS2UNIT
ADE
1
Techstream Lite
TSLITEPDLR01
Techstream Lite (Green Cable)
TSLP2DLR01
*Essential SST.
NOTE
Only ONE of the Techstream units listed above is required.
Software version 17.00.020 or later is required.
Additional Techstream units may be ordered by calling Approved Dealer Equipment (ADE)
at 1-800-368-6787.
SPECIAL SERVICE TOOLS (SST)
PART NUMBER
QTY
Battery Diagnostic Tool*
DCA-8000P T
1
*Essential SST.
NOTE
Additional SSTs may be ordered by calling 1-800-933-8335.
© 2021 Lexus, a division of Toyota Motor Sales, USA
L-SB-0012-22
May 6, 2022
Page 3 of 7
MIL ON With DTC P019064
Calibration Information
MODEL
CALIBRATION ID
MODEL
YEAR
BATTERY
2019
NiMH
ES 300h
UX 250h
PREVIOUS
NEW
8966333S8000
8966333S8100
896637621000
896637621100
Repair Procedure
1. Using Techstream, check for DTC P019064 (Fuel Rail Pressure Sensor “A” Signal
Plausibility Failure).
Is DTC P019064 present?
YES — Continue to step 2.
NO — This bulletin does NOT apply. Continue diagnosis using the applicable
Repair Manual.
© 2021 Lexus, a division of Toyota Motor Sales, USA
L-SB-0012-22
May 6, 2022
Page 4 of 7
MIL ON With DTC P019064
Repair Procedure (continued)
2. Use Techstream to confirm if the ECM (PCM) calibration has been updated and check
for the Authorized Modifications Label affixed to the vehicle in the locations shown in
Figures 1 and 2.
Is the calibration ID listed in Techstream and on the label the latest ECM (PCM) calibration?
YES — This bulletin does NOT apply. Continue diagnosis using the applicable
Repair Manual.
NO — Continue to step 3.
Figure 1. Location of Authorized Modifications Label on 2019 ES 300h
TOYOTA MOTOR CORPORATION
AUTHORIZED MODIFICATIONS
THE FOLLOWING MODIFICATIONS HAVE BEEN MADE:
1
2
THESE MODIFICATIONS HAVE BEEN APPROVED
AS APPROPRIATE BY EPA AND CARB
3
DEALER CODE:
CHANGE AUTHORITY:
DATE:
4
5
1
Replacement ECM (PCM) Part Number (e.g.,
89661-33W71)
4
Date Completed
2
New Calibration ID (e.g., 8966333S8100)
5
This SB Number
3
Dealer Code
© 2021 Lexus, a division of Toyota Motor Sales, USA
L-SB-0012-22
May 6, 2022
Page 5 of 7
MIL ON With DTC P019064
Repair Procedure (continued)
Figure 2. Location of Authorized Modifications Label on 2019 UX 250h
TOYOTA MOTOR CORPORATION
AUTHORIZED MODIFICATIONS
THE FOLLOWING MODIFICATIONS HAVE BEEN MADE:
1
2
THESE MODIFICATIONS HAVE BEEN APPROVED
AS APPROPRIATE BY EPA AND CARB
3
DEALER CODE:
CHANGE AUTHORITY:
4
DATE:
5
1
Replacement ECM (PCM) Part Number (e.g.,
89661-76211)
4
Date Completed
2
New Calibration ID (e.g., 896637621100)
5
This SB Number
3
Dealer Code
© 2021 Lexus, a division of Toyota Motor Sales, USA
L-SB-0012-22
May 6, 2022
Page 6 of 7
MIL ON With DTC P019064
Repair Procedure (continued)
3. Flash reprogram the ECM (PCM).
NOTE
The battery diagnostic tool MUST be used in Power Supply Mode to maintain battery voltage
at 13.5V while flash reprogramming the vehicle.
For details on how to use the battery diagnostic station, refer to the DCA-8000 Instruction Manual
located at TIS – Diagnostics – Tools & Equipment – Battery Diagnostics.
Follow the procedures outlined in Service Bulletin L-SB-0001-18, Techstream ECU Flash
Reprogramming Procedure, and flash the ECM (PCM) with the NEW calibration file update.
4. Prepare and install the Authorized Modifications Label.
A. Using a permanent marker, enter the following information on the label:
ECM (PCM) part number [Refer to the Parts Information section for the NEW
PART NUMBER]
Calibration ID(s) [Refer to the Calibration Information section for the
NEW CALIBRATION ID]
Dealer Code
Repair Date
Change Authority [This bulletin number]
B. Install the Authorized Modifications Label onto the vehicle at the locations shown in
Figures 1 and 2. The Authorized Modifications Label is available through the MDC,
P/N 00451-00001-LBL.
© 2021 Lexus, a division of Toyota Motor Sales, USA
L-SB-0012-22
May 6, 2022
Page 7 of 7
MIL ON With DTC P019064
Repair Procedure (continued)
5. Perform the confirmation driving pattern to confirm DTC P019064 does NOT reoccur.
Refer to TIS, applicable model and model year Repair Manual:
2019 ES 300h:
Engine/Hybrid System – Engine Control – “A25A-FXS (Engine Control): SFI System:
P01902A, P019064; Fuel Rail Pressure Sensor “A” Signal Stuck in Range”
2019 UX 250h:
Engine/Hybrid System – Engine Control – “M20A-FXS (Engine Control): SFI System:
P01902A, P019064; Fuel Rail Pressure Sensor “A” Signal Stuck in Range”
Is DTC P019064 present?
YES — This bulletin does NOT apply. Continue diagnosis using the applicable
Repair Manual.
NO — The repair is complete.
© 2021 Lexus, a division of Toyota Motor Sales, USA
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TSB/Document ID: LSB001222
Replacement Service Bulletin Number:
MFR Communication Date: 2022-05-06
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: ELECTRICAL SYSTEM
MFR Component System:
MFR Component Subsystem:
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