TSB001024

T-SB-0010-24
February 21, 2024
MIL ON With Misfire DTC(s) in Cold Temperatures
Service
Category
Vehicle Interior
Section
Meter/Gauge/Display
Market USA
Applicability
YEAR(S)
MODEL(S)
2021 - 2022
Avalon
2018 - 2024
Camry
2019 - 2024
RAV4
ADDITIONAL INFORMATION
Introduction
Some 2021 – 2022 model year Avalon, 2018 – 2024 Camry, and 2019 – 2024 RAV4 vehicles with
A25A-FKS engines may have a MIL ON condition with one or more of the following Diagnostic
Trouble Codes (DTCs) upon cold soak start up with engine coolant temperatures between
14°F – 41°F:

P030027 – Random/Multiple Cylinder Misfire Detected (Emission) Signal Rate of Change
Above Threshold

P030000 – Random/Multiple Cylinder Misfire Detected

P030100 – Cylinder 1 Misfire Detected

P030200 – Cylinder 2 Misfire Detected

P030300 – Cylinder 3 Misfire Detected

P030400 – Cylinder 4 Misfire Detected
Follow the Repair Procedure in this bulletin to address these conditions.
© 2024 Toyota Motor Sales, USA
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MIL ON With Misfire DTC(s) in Cold Temperatures
Warranty Information
OP CODE
DESCRIPTION
MODEL
EG2401
Replace Valve Lash Adjuster Assembly
(Exhaust Side ONLY)
TIME
OFP
T1
T2
13750-F0010
8A
99
Avalon
3.0
Camry
Rav4
2.8
APPLICABLE WARRANTY
 This repair is covered under the Toyota Powertrain Warranty. This warranty is in effect for
60 months or 60,000 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
Adjuster Assy, Valve Lash
8
90301-31016
Ring, O
1
90301-92005
Ring, O (for Cam Timing Control Motor)
1
90301-T0079
Ring, O (for Cam Timing Oil Control Solenoid)
1
29343-F0010
Ring, O Vacuum Pump, No. 1
1
23224-F0011
Gasket, Fuel Pump Spacer
1
11213-25020
Gasket, Cylinder Head Cover
1
11213-31080
Gasket, Cylinder Head Cover, No. 2
6
11159-0P040
Gasket, Camshaft Bearing Cap Oil Hole
1
PREVIOUS
NEW
13750-F0010
13750-70020
NOTE
ONLY use the NEW part numbers listed and NOT ANY superseding part numbers.
© 2024 Toyota Motor Sales, USA
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February 21, 2024
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MIL ON With Misfire DTC(s) in Cold Temperatures
Required Tools & Equipment
REQUIRED EQUIPMENT
SUPPLIER
Techstream ADVI*
PART NUMBER
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.
 GTS+ software version 2023.04.003.02 or later is required.
 Additional Techstream units may be ordered by calling Approved Dealer Equipment (ADE)
at 1-800-368-6787.
Repair Procedure
1. Confirm the condition exists.
Does the vehicle exhibit a MIL ON condition one or more of the following DTCs present?

P030027 – Random/Multiple Cylinder Misfire Detected (Emission) Signal Rate of Change
Above Threshold

P030000 – Random/Multiple Cylinder Misfire Detected

P030100 – Cylinder 1 Misfire Detected

P030200 – Cylinder 2 Misfire Detected

P030300 – Cylinder 3 Misfire Detected

P030400 – Cylinder 4 Misfire Detected

YES — Continue to step 2.

NO — This bulletin does NOT apply. Continue diagnosis using the applicable
Repair Manual.
2. Refer to the freeze frame data. Did the vehicle exhibit the MIL ON with engine coolant
temperatures between 14°F – 41°F?

YES — Continue to step 3.

NO — This bulletin does NOT apply. Continue diagnosis using the applicable
Repair Manual.
© 2024 Toyota Motor Sales, USA
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MIL ON With Misfire DTC(s) in Cold Temperatures
Repair Procedure (continued)
3. Confirm the compression is within specification.
Refer to TIS, applicable model and model year Repair Manual:
NOTE
Perform ONLY step 11.

2021 – 2022 Avalon:
Engine / Hybrid System – A25A-FKS (Engine Mechanical) – Engine –
On-Vehicle Inspection

2018 – 2019 / 2020 – 2024 Camry:
Engine / Hybrid System – A25A-FKS (Engine Mechanical) – Engine –
On-Vehicle Inspection

2019 – 2020 / 2021 – 2024 RAV4:
Engine / Hybrid System – A25A-FKS (Engine Mechanical) – Engine –
On-Vehicle Inspection
Is the compression within specifications?

YES — Continue to step 4.

NO — This bulletin does NOT apply. Continue diagnosis using the applicable
Repair Manual.
4. Confirm the spark plugs, and ignition coils are functioning properly.
Refer to TIS, applicable model and model year Repair Manual:

2021 – 2022 Avalon:
Engine / Hybrid System – A25A-FKS (Engine Control) – Ignition System –
On-Vehicle Inspection

2018 – 2024 Camry:
Engine / Hybrid System – A25A-FKS (Engine Control) – Ignition System –
On-Vehicle Inspection

2019 – 2020 / 2021 – 2024 RAV4:
Engine / Hybrid System – A25A-FKS (Engine Control) – Ignition System –
On-Vehicle Inspection
Is the vehicle exhibiting proper ignition?

YES — Continue to step 5.

NO — This bulletin does NOT apply. Continue diagnosis using the applicable
Repair Manual.
© 2024 Toyota Motor Sales, USA
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MIL ON With Misfire DTC(s) in Cold Temperatures
Repair Procedure (continued)
5. Confirm the resistance on the direct and port injectors are within specifications.
Refer to TIS, applicable model and model year Repair Manual:

2021 – 2022 Avalon:
Engine / Hybrid System – A25A-FKS (Fuel) –
Fuel Injector (for Direct Injection) – Inspection

2021 – 2022 Avalon:
Engine / Hybrid System – A25A-FKS (Fuel) –
Fuel Injector (for Port Injection) – Inspection

2018 – 2024 Camry:
Engine / Hybrid System – A25A-FKS (Fuel) –
Fuel Injector (for Direct Injection) – Inspection

2018 – 2024 Camry:
Engine / Hybrid System – A25A-FKS (Fuel) –
Fuel Injector (for Port Injection) – Inspection

2019 – 2024 RAV4:
Engine / Hybrid System – A25A-FKS (Fuel) –
Fuel Injector (for Direct Injection) – Inspection

2019 – 2024 RAV4:
Engine / Hybrid System – A25A-FKS (Fuel) –
Fuel Injector (for Port Injection) – Inspection
Are the resistance values for the direct and port injectors within specifications?

YES — Continue to step 6.

NO — This bulletin does NOT apply. Continue diagnosis using the applicable
Repair Manual.
© 2024 Toyota Motor Sales, USA
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MIL ON With Misfire DTC(s) in Cold Temperatures
Repair Procedure (continued)
6. Inspect the fuel system.
Refer to TIS, applicable model and model year Repair Manual:

2021 – 2022 Avalon:
Engine / Hybrid System – Engine Control – A25A-FKS (Fuel) – Fuel System –
On-Vehicle Inspection

2018 – 2024 Camry:
Engine / Hybrid System – Engine Control – A25A-FKS (Fuel) – Fuel System –
On-Vehicle Inspection

2019 – 2024 RAV4:
Engine / Hybrid System – Engine Control – A25A-FKS (Fuel) – Fuel System –
On-Vehicle Inspection
Is the fuel system within specification?

YES — Continue to step 7.

NO — This bulletin does NOT apply. Continue diagnosis using the applicable
Repair Manual.
7. Follow the applicable Repair Manuals to replace ALL the exhaust side hydraulic lash adjusters
with the applicable service part number listed above.
A. Remove the exhaust side hydraulic lash adjusters.
(1) Remove the camshaft.
Refer to TIS, applicable model and model year Repair Manual:

2021 – 2022 Avalon:
Engine / Hybrid System – A25A-FKS (Engine Mechanical) – Camshaft – Removal

2018 / 2019 – 2020 / 2021 – 2024 Camry:
Engine / Hybrid System – A25A-FKS (Engine Mechanical) – Camshaft – Removal

2019 / 2020 / 2021 – 2024 RAV4:
Engine / Hybrid System – A25A-FKS (Engine Mechanical) – Camshaft – Removal
© 2024 Toyota Motor Sales, USA
T-SB-0010-24
February 21, 2024
MIL ON With Misfire DTC(s) in Cold Temperatures
Repair Procedure (continued)
(2) Remove the hydraulic lash adjusters.
Refer to TIS, applicable model and model year Repair Manual:

2021 – 2022 Avalon:
Engine / Hybrid System – A25A-FKS (Engine Mechanical) –
Engine Unit – Disassembly
NOTE
Perform ONLY steps 45 and 46.

2018 – 2019 / 2020 – 2024 Camry:
Engine / Hybrid System – A25A-FKS (Engine Mechanical) –
Engine Unit – Disassembly
NOTE
Perform ONLY steps 45 and 46.

2019 – 2020 (11/2018 – 06/2020) RAV4:
Engine / Hybrid System – A25A-FKS (Engine Mechanical) –
Engine Unit – Disassembly
NOTE
Perform ONLY steps 47 and 48.

2020 – 2024 (06/2020 – ) RAV4:
Engine / Hybrid System – A25A-FKS (Engine Mechanical) –
Engine Unit – Disassembly
NOTE
Perform ONLY steps 47 and 48.
© 2024 Toyota Motor Sales, USA
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MIL ON With Misfire DTC(s) in Cold Temperatures
Repair Procedure (continued)
B. Install the NEW exhaust side hydraulic lash adjusters.
(1) Install the NEW exhaust side hydraulic lash adjusters.
Refer to TIS, applicable model and model year Repair Manual:

2021 – 2022 Avalon:
Engine / Hybrid System – A25A-FKS (Engine Mechanical) –
Engine Unit – Reassembly
NOTE
Perform ONLY steps 26 and 27.

2018 – 2019 Camry:
Engine / Hybrid System – A25A-FKS (Engine Mechanical) –
Engine Unit – Reassembly
NOTE
Perform ONLY steps 26 and 27.

2020 / 2021 – 2024 Camry:
Engine / Hybrid System – A25A-FKS (Engine Mechanical) –
Engine Unit – Reassembly
NOTE
Perform ONLY steps 27 and 28.

2019 – 2020 / 2021 – 2024 RAV4:
Engine / Hybrid System – A25A-FKS (Engine Mechanical) –
Engine Unit – Reassembly
NOTE
Perform ONLY steps 26 and 27.
© 2024 Toyota Motor Sales, USA
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MIL ON With Misfire DTC(s) in Cold Temperatures
Repair Procedure (continued)
(2) Reinstall the camshaft.
Refer to TIS, applicable model and model year Repair Manual:

2021 – 2022 Avalon:
Engine / Hybrid System – A25A-FKS (Engine Mechanical) –
Camshaft – Installation

2018 – 2024 Camry:
Engine / Hybrid System – A25A-FKS (Engine Mechanical) –
Camshaft – Installation

2019 – 2020 / 2021 – 2024 RAV4:
Engine / Hybrid System – A25A-FKS (Engine Mechanical) –
Camshaft – Installation
8. Using GTS+, clear ANY DTCs and then at coolant temperatures of 14°F – 41°F, confirm the
condition is no longer present.
Refer to TIS, applicable model and model year Repair Manual:
NOTE
Perform ONLY the Confirmation Driving Pattern steps.

2021 – 2022 Avalon:
Engine / Hybrid System – A25A-FKS (Engine Control) – SFI System –
P030000,P030027,P030085-P030400; Random/Multiple Cylinder Misfire Detected

2018 Camry:
Engine / Hybrid System – A25A-FKS (Engine Control) – SFI System –
P030000,P030027,P030085-P030400; Random/Multiple Cylinder Misfire Detected

2019 – 2020 (08/2018 – 03/2020) Camry:
Engine / Hybrid System – A25A-FKS (Engine Control) – SFI System –
P030000,P030027,P030085-P030400; Random/Multiple Cylinder Misfire Detected

2020 – 2024 (03/2020 – ) Camry:
Engine / Hybrid System – A25A-FKS (Engine Control) – SFI System –
P030000,P030027,P030085-P030400; Random/Multiple Cylinder Misfire Detected

2019 – 2020 / 2021 – 2024 RAV4:
Engine / Hybrid System – A25A-FKS (Engine Control) – SFI System –
P030000,P030027,P030085-P030400; Random/Multiple Cylinder Misfire Detected
© 2024 Toyota Motor Sales, USA