2018-2021 Toyota Engine Maintenance Required P268111 P268115

Toyota Technical Service Bulletin (TSB) T-SB-0112-24, revised on January 07, 2025, addresses a specific condition affecting certain 2018-2021 Toyota vehicles equipped with A25A-FKS, A25A-FXS, or M20A-FKS engines. Owners may observe an "Engine Maintenance Required" message displayed in the Multi-Information Display (MID). This message is often accompanied by specific diagnostic trouble codes (DTCs) related to the engine coolant bypass valve circuit.

Symptoms

Owners of affected 2018-2021 Toyota Avalon, Camry, Corolla, Highlander HV, RAV4, RAV4 Prime, Sienna HV, and Venza HV models may experience an "Engine Maintenance Required" message appearing on their vehicle's Multi-Information Display (MID). This visual alert indicates a detected issue within the engine system, specifically related to cooling system components.

Fault Codes / DTCs

When the "Engine Maintenance Required" message appears, technicians performing a diagnostic scan will likely find one or both of the following Diagnostic Trouble Codes (DTCs):

Code	Description
P268111	Engine Coolant Bypass Valve Circuit Short to Ground
P268115	Engine Coolant Bypass Valve Circuit Short to Battery or Open

These codes pinpoint an electrical fault within the engine coolant bypass valve circuit.

Diagnosis / Trigger Conditions

To confirm the condition, a technician will first verify if the "Engine Maintenance Required" message is present in the Multi-Information Display (MID). If this message is confirmed, a Health Check must be performed using GTS+ diagnostic software (version 2024.04.004.02 or later) to check for the presence of DTC P268111 and/or P268115. If these DTCs are found, the vehicle falls under the scope of this bulletin. If the message or DTCs are not present, this bulletin does not apply, and further diagnosis should follow the applicable Repair Manual. This diagnostic process is crucial for accurately addressing issues like the Toyota Camry P268111 P268115 fault.

Repair Procedure Summary

The repair procedure involves a series of diagnostic checks and component replacements based on the specific vehicle model. The steps are as follows:

1. Confirm Condition: Verify that the "Engine Maintenance Required" message is displayed in the MID. If not, this bulletin does not apply, and standard repair manual diagnostics should be followed.
2. Perform Health Check: Using GTS+ diagnostic software, perform a Health Check to confirm the presence of DTC P268111 (Engine Coolant Bypass Valve Circuit Short to Ground) and/or P268115 (Engine Coolant Bypass Valve Circuit Short to Battery or Open). If these DTCs are not present, this bulletin does not apply.
3. Identify Vehicle Type: Determine if the vehicle is a Corolla or Corolla Hatchback. If yes, proceed to step 5 for water valve replacement. If no, proceed to step 4.
4. Identify Vehicle Type (Continued): Determine if the vehicle is an Avalon, Avalon HV, Camry, Camry HV, Highlander HV, RAV4, RAV4 HV, RAV4 Prime, Sienna HV, or Venza HV. If yes, proceed to step 6 for water bypass valve hose assembly replacement. If no, this bulletin does not apply.
5. Replace Water Valve (Corolla/Corolla Hatchback): For 2019-2021 Corolla and Corolla Hatchback models, the water valve (also referred to as the Flow Shutting Valve for Heater) needs to be removed and replaced with a new one. Technicians must refer to the Toyota Technical Information System (TIS) Repair Manual for the specific model year and engine type (M20A-FKS) for detailed removal and installation instructions. After replacement, proceed to step 7.
6. Replace Water Bypass Valve Hose Assembly No. 1 (Other Models): For 2018-2021 Avalon, Camry, Highlander HV, RAV4, Sienna HV, and Venza HV models, the water bypass valve hose assembly No. 1 (also referred to as the Flow Shutting Valve) needs to be removed and replaced. Technicians must consult the appropriate TIS Repair Manual for precise removal and installation instructions, which vary by model year and engine type (A25A-FKS or A25A-FXS). After replacement, proceed to step 7.
7. Clear DTCs and Test Drive: After the component replacement, use GTS+ to clear any stored Diagnostic Trouble Codes. The vehicle should then be test-driven to confirm that the condition has been resolved and the "Engine Maintenance Required" message no longer appears.

Required Tools or Parts

Technicians performing this repair will need specific diagnostic tools and replacement parts:

• Diagnostic Tools: One of the following Techstream units is required: Techstream ADVi (Part Number: TSADVUNIT), Techstream 2.0 (Part Number: TS2UNIT), or Techstream Lite (Part Number: TSLITEPDLR01 or TSLP2DLR01). The GTS+ Software must be version 2024.04.004.02 or later. Additional Techstream units can be ordered by calling Approved Dealer Equipment (ADE) or visiting the TIS – Diagnostics – Tools & Equipment – Techstream Order Portal.
• Replacement Parts: The specific parts vary by model. It is critical to order the correct part number for the specific vehicle being serviced to address the Toyota Camry P268111 P268115 issue.
  • For Corolla/Corolla Hatchback: Valve, Water. The new part number is 16671-F2030, which supersedes the previous part number 16671-F2010. One unit is required.
  • For Avalon, Camry, RAV4 (non-HV): Hose Assy, Water By-Pass, No. 1. The new part number is 16260-F0300, superseding 16260-F0010. One unit is required.
  • For Avalon HV, Camry HV, RAV4 HV, RAV4 Prime, Venza HV: Hose Assy, Water By-Pass, No. 1. The new part number is 16260-F0310, superseding 16260-F0021. One unit is required.
  • For Highlander HV, Sienna HV: Hose Assy, Water By-Pass, No. 1. The new part number is 16260-F0330, superseding 16260-F0100. One unit is required.
  • For Sienna HV (Mexico Spec): Hose Assy, Water By-Pass, No. 1. The new part number is 16260-F0340, superseding 16260-F0140. One unit is required.
  • For All models: Coolant - Super Long Life. Part Number: 00272-SLLC2. One unit is required.

Important Warnings

This bulletin, T-SB-0112-24, was revised on January 07, 2025, with critical updates to both the Parts Information and Repair Procedure sections. Any previous printed versions of this bulletin should be discarded to ensure the most current and accurate information is used for diagnosis and repair. For specific warranty applicability and detailed claim filing instructions, technicians and owners should refer to Campaign Publication 24TE04.

NHTSA ID: 11014174