Service-Bulletin

2021-2022 Toyota MIL ON with P043F00 and Other DTCs

Toyota has issued a Technical Service Bulletin (TSB) for 2021-2022 Camry, RAV4, Highlander, and Avalon models equipped with A25A-FKS or A25A-FXS engines. Owners may experience a 'MIL ON' condition, commonly known as a Check Engine Light, accompanied by diagnostic trouble codes such as P043F00.

ByAhmet Topcu — Founder & Editor-in-Chief2021 Toyota Camry
2021 TOYOTA Camry — Toyota Camry MIL ON P043F00
Editorial illustration generated for this article.
P043F00P043E00P24007EP24007FP24187EMIL ONCheck Engine Light P043F00A25A-FKS engineA25A-FXS engineToyota Camry MIL ON P043F00
Toyota Avalon
2021–2022
Toyota Camry
2022
Toyota Highlander
2021–2022
Toyota RAV4
2021–2022

Toyota has released a Technical Service Bulletin (TSB) concerning certain 2021-2022 Toyota vehicles. This bulletin addresses a condition where the Malfunction Indicator Lamp (MIL), commonly known as the Check Engine Light, illuminates on the dashboard.

The TSB specifically applies to models equipped with either the A25A-FKS or A25A-FXS engines. If you own one of these vehicles and experience a 'MIL ON' condition, it's important to have it diagnosed by a qualified technician.

Symptoms

The primary symptom owners will notice is the illumination of the Malfunction Indicator Lamp (MIL) on the instrument cluster. This is often referred to as the Check Engine Light. When this light comes on, it indicates that the vehicle's onboard diagnostic system has detected a fault.

Fault Codes / DTCs

When the 'MIL ON' condition occurs, technicians may find one or more of the following Diagnostic Trouble Codes (DTCs) stored in the vehicle's system:

Code Description
P043F00 Evaporative Emission System Leak Detection Pump Sense Circuit Low Range/Performance
P043E00 Evaporative Emission System Leak Detection Pump Sense Circuit High Range/Performance
P24007E Evaporative Emission System Leak Detection Pump Control Circuit/Open
P24007F Evaporative Emission System Leak Detection Pump Control Circuit High
P24187E Evaporative Emission System Leak Detection Pump Control Circuit Low

These codes specifically point to potential issues within the evaporative emission system, particularly related to the leak detection pump. If your Toyota Camry MIL ON P043F00 appears, these are the codes a technician will investigate.

Affected Engines

The TSB applies to vehicles fitted with specific engine types. These include the A25A-FKS engine and the A25A-FXS engine. These engines are found in various Toyota models, including the 2021-2022 Toyota Camry, RAV4, Highlander, and Avalon.

What to Do

If your 2021-2022 Toyota experiences a 'MIL ON' condition with any of the listed DTCs, such as the Toyota Camry MIL ON P043F00, it is recommended to schedule an appointment with your authorized Toyota dealership. They have access to the latest diagnostic tools and technical information to accurately diagnose and address the underlying cause of these fault codes.

This TSB provides guidance to technicians on how to properly identify and repair the issue. Since this is a manufacturer communication, the repair may be covered under warranty, depending on your vehicle's age and mileage.


Source: NHTSA ID: 10224174

Frequently Asked Questions

What does 'MIL ON' mean on my Toyota?
MIL ON stands for Malfunction Indicator Lamp On, which is commonly known as the Check Engine Light. When this light illuminates, it indicates that your vehicle's engine computer has detected a problem.
What should I do if my 2021-2022 Toyota shows a P043F00 code?
If your 2021-2022 Toyota displays a P043F00 code or any other related DTCs mentioned in the TSB, you should contact your Toyota dealership. A qualified technician can diagnose the exact cause and perform the necessary repairs according to the manufacturer's guidelines.
Are the repairs for the 'MIL ON' condition with DTC P043F00 covered under warranty?
Repairs related to Technical Service Bulletins (TSBs) may be covered under your vehicle's factory warranty, depending on the specific terms, age, and mileage of your 2021-2022 Toyota. It's best to consult with your Toyota dealership to confirm warranty coverage for this issue.
Which Toyota models and engines are affected by the 'MIL ON' TSB?
This TSB primarily affects 2021-2022 Toyota Camry, RAV4, Highlander, and Avalon models equipped with either the A25A-FKS or A25A-FXS engines. These vehicles may experience a 'MIL ON' condition with specific diagnostic trouble codes.

Related Articles

2021 Toyota Camry Health Check: Common TSBs and Owner Concerns

While the 2021 Toyota Camry has no recalls or owner complaints, several manufacturer service bulletins address potential issues. Key concerns include engine coolant leaks, transmission whine, and Malfunction Indicator Lamp (MIL) illumination with reduced engine power, especially in cold weather.

2021-2026 Toyota Vehicles Musty Odor Remediation TSB

This Toyota Technical Service Bulletin (T-SB-0055-24 Rev2) addresses musty odors in 2021-2026 Toyota vehicles resulting from water intrusion. It outlines a dealer-performed remediation process, including inspection, cleaning, and ozone treatment.

2021 Toyota Camry Coolant Leak Customer Support Program

Toyota's Customer Support Program 24TE04 addresses a potential flow shut-off valve coolant leak in certain 2019-2021 Avalon, Camry, Corolla, Highlander, RAV4, Sienna, and Venza models. This leak can trigger an 'Engine Maintenance Required' warning or affect A/C function. Toyota will cover repairs…

2018-2021 Toyota Engine Maintenance Required TSB P268111 P268115

Toyota has issued Technical Service Bulletin T-SB-0112-24 Rev2 for certain 2018-2021 Toyota models that may display an "Engine Maintenance Required" message along with Diagnostic Trouble Codes P268111 or P268115. This bulletin outlines the procedure to address issues with the Engine Coolant Bypass…

2021-2022 Toyota MIL ON with DTCs P01201C, P210015

Toyota T-SB-0005-24 Rev2 addresses Malfunction Indicator Lamp (MIL) illumination and reduced engine power in 2021-2022 Toyota Avalon, Camry, and RAV4 vehicles. The issue is linked to specific throttle body DTCs (P01201C, P210015, P210019, P211172) occurring in freezing temperatures, requiring ECM…

Comments

Be the first to comment.

Leave a comment

Comments are moderated and may take a moment to appear. Only your first name and the initial of your last name are shown publicly.

Verifying you are human...