L-SB-0048-19_Rev

L-SB-0048-19
Rev1
December 23, 2019
MIL ON With DTC P013A
Service
Category
Engine/Hybrid System
Section
Engine Control
Market USA
Applicability
YEAR(S)
MODEL(S)
2020
NX300H
ADDITIONAL INFORMATION
REVISION NOTICE
February 25, 2020 Rev1:
 The Production Change Information and Warranty Information sections have been updated.
Any previous printed versions of this bulletin should be discarded.
Introduction
Some 2020 model year NX300h vehicles equipped with a 2AR-FXE engine may exhibit a MIL ON
condition with Diagnostic Trouble Code (DTC) P013A (Oxygen Sensor Slow Response – Rich to
Lean Bank 1 Sensor 2). This condition may be caused by a leak from the exhaust manifold to front
pipe donut gasket. Follow the Repair Procedure in this bulletin to address this condition.
Production Change Information
This bulletin applies to vehicles produced BEFORE the Production Change Effective VIN
shown below.
MODEL
PLANT
DRIVETRAIN
PRODUCTION CHANGE EFFECTIVE VIN
NX300h
Tahara
AWD
JTJ#JRDZ#L5006704
NOTE
The 11th digit in the VIN number will be 5 for Tahara produced vehicles.
© 2020 Lexus, a division of Toyota Motor Sales, USA
Page 1 of 3
L-SB-0048-19
Rev1
December 23, 2019
Page 2 of 3
MIL ON With DTC P013A
Warranty Information
OP CODE
DESCRIPTION
TIME
OFP
T1
T2
170101
R & R Exhaust Manifold Donut Gasket
0.6
17451-XXXXX
8A
57
APPLICABLE WARRANTY
 This repair is covered under the Lexus Comprehensive Warranty. This warranty is in effect for
48 months or 50,000 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.
Parts Information
PART NUMBER
PART NAME
QTY
17451-0D150
Gasket, Exhaust Pipe (Donut Gasket)
1
90917-06072
Gasket, Exhaust Pipe
1
PREVIOUS
NEW
17451-28070
–
Required Tools & Equipment
REQUIRED EQUIPMENT
SUPPLIER
Techstream ADVi*
QTY
TSADVUNIT
Techstream 2.0
Techstream Lite
PART NUMBER
TS2UNIT
ADE
Techstream Lite (Green Cable)
TSLITEPDLR01
TSLP2DLR01
*Essential SST.
NOTE
 Only ONE of the Techstream units listed above is required.
 Software version 14.30.022 or later is required.
 Additional Techstream units may be ordered by calling Approved Dealer Equipment (ADE)
at 1-800-368-6787.
© 2020 Lexus, a division of Toyota Motor Sales, USA
1
L-SB-0048-19
Rev1
December 23, 2019
Page 3 of 3
MIL ON With DTC P013A
Repair Procedure
1. Does the vehicle exhibit a MIL ON condition with DTC P013A
(Oxygen Sensor Slow Response – Rich to Lean Bank 1 Sensor 2)?

YES — Continue to step 2.

NO — This bulletin does NOT apply. Continue diagnosis using the applicable
Repair Manual.
2. Check for a leak from the exhaust manifold to front pipe donut gasket.
HINT
Blow compressed air around the donut gasket and look for a change in B1S2 O2 sensor readings in
Techstream while the vehicle is in “Maintenance Mode.”
Do the B1S2 O2 sensor readings change while blowing compressed air around the
donut gasket?

YES — Continue to step 3.

NO — This bulletin does NOT apply. Continue diagnosis using the applicable
Repair Manual.
3. Replace the affected donut gasket between the exhaust manifold and the front pipe.
A. Remove the front pipe and gaskets.
Refer to TIS, applicable model and model year Repair Manual:

2020 NX300h:
Engine/Hybrid System – Intake/Exhaust
“2AR-FXE Intake / Exhaust: Exhaust Pipe: Removal”
B. Reuse the front pipe and install NEW front pipe gaskets.
Refer to TIS, applicable model and model year Repair Manual:

2020 NX300h:
Engine/Hybrid System – Intake/Exhaust
“2AR-FXE Intake / Exhaust: Exhaust Pipe: Installation”
4. Clear ANY DTCs and test-drive the vehicle to confirm the condition is no longer present.
© 2020 Lexus, a division of Toyota Motor Sales, USA