T-SB-0098-19

August 5, 2019

MIL ON DTC P2646, P265B, P10A0, or P1055
Service
Category

Engine/Hybrid System

Section

Engine Control

Market USA

Applicability
YEAR(S)

MODEL(S)

2018 - 2019

C-HR

2020

Corolla

ADDITIONAL INFORMATION

Introduction
Some 2018 – 2019 model year C-HR (equipped with a 3ZR-FAE engine) and 2020 model year
Corolla (equipped with a 2ZR-FAE engine) vehicles may exhibit a MIL ON condition with one or
more of the following Diagnostic Trouble Codes (DTCs):


P2646 (A Rocker Arm Actuator System Performance or Stuck Off [Bank 1])



P265B (B Rocker Arm Actuator Position Sensor Circuit Range Performance [Bank 1])



P10A0 (Valvematic Angle Difference [CSS])



P1055 (Valvematic Angle Difference [ECU])

Follow the Repair Procedure in this bulletin to address this condition.

© 2019 Toyota Motor Sales, USA

Page 1 of 5

T-SB-0098-19

August 5, 2019

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MIL ON DTC P2646, P265B, P10A0, or P1055
Warranty Information
OP CODE

DESCRIPTION

TIME

EG1905

R & R Valve Lift Controller

2.0

EG1906

Learn Value Reset (One Time)

0.3

EG1907

Learn Value Reset (Two Times)

0.6

EG1908

Learn Value Reset (One Time)
and R & R CV Valve Lift Controller

2.3

EG1909

Learn Value Reset (Two Times)
and R & R CV Valve Lift Controller

2.6

OFP

T1

T2

222A0-37023

8A

74

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.
 For California specification vehicles sold, registered, and operated in California, Connecticut,
Delaware, Maine, Maryland, Massachusetts, New Jersey, New York, Oregon, Pennsylvania,
Rhode Island, Vermont, and Washington. This repair is covered under the California Long-Term
Emission Warranty. This warranty is in effect for 84 months or 70,000 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
PREVIOUS

NEW

222A0-37023

222A0-37024

PART NAME

QTY

Controller Assy, Continuously Variable Valve Lift

1

90301-38010

1
Ring, O

90068-14030

2

11213-37021

Gasket, Cylinder Head Cover

1

90430-10024

Gasket

1

11159-37010

Gasket, Camshaft Bearing Cap Oil Hole

2

16258-37010

Washer, Seal (For Cylinder Head Cover)

1

NOTE
Order parts only as needed.

© 2019 Toyota Motor Sales, USA

T-SB-0098-19

August 5, 2019

Page 3 of 5

MIL ON DTC P2646, P265B, P10A0, or P1055
Required Tools & Equipment
REQUIRED TOOLS & MATERIAL

QUANTITY

Toyota Genuine Seal Packing Black, Three Bond 1207B, or Equivalent

As Needed

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.
 Software version 14.10.028 or later is required.
 Additional Techstream units may be ordered by calling Approved Dealer Equipment (ADE)
at 1-800-368-6787.

Repair Procedure

1. Using Techstream, check for stored DTCs.
Are DTCs P2646, P265B, P10A0, or P1055 present?
 YES — Continue to step 2.


NO — This bulletin does NOT apply. Continue diagnosis using the applicable
Repair Manual.

2. Clear ALL DTCs, start the engine in Park or Neutral, and increase the engine’s RPM to 3500
for 5 seconds.
Did the DTCs return?
 YES — Continue to step 3.


NO — Go to step 7.

3. With the vehicle in IG ON/Engine OFF, clear the DTCs that reset, then perform the
Learn Value Reset Utility: Engine and ECT – Utility – Learn Value Reset.

© 2019 Toyota Motor Sales, USA

T-SB-0098-19

August 5, 2019

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MIL ON DTC P2646, P265B, P10A0, or P1055
Repair Procedure (continued)

4. Reset the connection cycle to ensure active test function.
A. Turn the ignition to IG OFF. If the vehicle is equipped with a standard key, remove it from
the ignition.
B. Disconnect Techstream from DLC and exit Techstream software.
C. Open Techstream software, then connect Techstream to DLC.
D. Turn the ignition to IG ON. Do NOT start the vehicle.
E. On Techstream, select Connect to Vehicle, then select Engine and ECT, then choose
Data List.
5. Perform the Engine Off VALVEMATIC Active Test.
A. Set up custom data list to show VALVEMATIC Target Angle and VALVEMATIC
Current Angle.
B. Select Active Test Activate the VALVEMATIC (ENG OFF) and ensure
parameters are met.
C. Perform active test LOW first (right arrow). Check for change to VALVEMATIC Current
Angle (it should go to approximately 105 – 106 degrees).
D. Perform active test HIGH (it should climb above 108 degrees).
E. It may take more than one LOW and HIGH cycle attempt to get the numbers to increase
or decrease.
6. After verifying VALVEMATIC Current Angle value changes, close Techstream software, start
engine, and increase RPM to 3500 for 5 seconds.
Did the DTCs return?


YES — Repeat steps 3 – 5.
NOTE
If the DTCs return after steps 3 – 5 have been repeated, go to step 8.



NO — Continue to step 7.

7. Start the engine and warm it up to normal operating temperature and test drive to confirm
proper vehicle operation.
Did the DTCs return?
 YES — Continue to step 8.
 NO — This Service Bulletin is complete. If ANY additional DTCs remain
continue diagnosis using the applicable Repair Manual.

© 2019 Toyota Motor Sales, USA

T-SB-0098-19

August 5, 2019

Page 5 of 5

MIL ON DTC P2646, P265B, P10A0, or P1055
Repair Procedure (continued)

8. Replace the continuously variable valve lift controller assembly.
A. Remove the continuously variable valve lift controller assembly.
Refer to TIS, applicable model and model year Repair Manual:


2018 / 2019 C-HR:
Engine / Hybrid System – Engine Control – “3ZR-FAE Engine Control: Continuously
Variable Valve Lift Controller: Removal”



2020 Corolla:
Engine Hybrid System – Engine Control – “2ZR-FAE (Engine Control): Continuously
Variable Valve Lift Controller: Removal [01/2019 - 03/2019] / [03/2019 - ]”

B. Install the NEW continuously variable valve lift controller assembly.
Refer to TIS, applicable model and model year Repair Manual:
 2018 / 2019 C-HR:
Engine Hybrid System – Engine Control – “3ZR-FAE Engine Control: Continuously
Variable Valve Lift Controller: Installation”


2020 Corolla:
Engine Hybrid System – Engine Control – “2ZR-FAE (Engine Control): Continuously
Variable Valve Lift Controller: Installation [01/2019 - 03/2019] / [03/2019 ]

9. Using Techstream, clear ANY stored DTCs.
10. Start the engine and warm it up to normal operating temperature.
11. Test-drive the vehicle.
A. Perform the steering sensor zero point calibration:
(1) On an appropriate road, drive the vehicle straight ahead at 22 mph or more for 5
seconds or more.
(2) Move the vehicle to a safe parking location and turn the engine switch OFF.
B. Confirm vehicle operation.
(1) Start the engine and complete the test drive to confirm proper vehicle operation.
12. Perform a Health Check to confirm the subject DTCs are no longer present.

© 2019 Toyota Motor Sales, USA