TSB: TOYOTA AVALON, CAMRY, HIGHLANDER, HIGHLANDER HYBRID, SIENNA, TACOMA (2016–2022)

Bulletin T-TT-0686-22 — March 8, 2022

Bulletin Details

Bulletin IDT-TT-0686-22
ManufacturerTOYOTA
ModelsAVALON, CAMRY, HIGHLANDER, HIGHLANDER HYBRID, SIENNA, TACOMA
Model Years2016–2022
Date IssuedMarch 8, 2022
Date Added to NHTSAApril 18, 2022
ComponentENGINE AND ENGINE COOLING
Vehicles Affected29 combinations

What is a TSB?

A Technical Service Bulletin is a document issued by the vehicle manufacturer to inform dealership technicians about a known issue and the recommended repair procedure. TSBs are not mandatory recalls — they serve as repair guidance for common problems.

If your vehicle has this issue, bring this bulletin ID to your dealer. If under warranty, the repair should be covered at no cost.

Summary

TT: The purpose of this Tech Tip is to provide diagnostic tips to prevent misdiagnosis of the following DTC?s and prevent repeat repairs. One or more of the Heated Oxygen Sensors (O2) or Air Fuel ratio sensor (A/F) DTCs below could set due

Affected Vehicles

MakeModelYearComponent
TOYOTA AVALON 2022 060000 ENGINE AND ENGINE COOLING
TOYOTA CAMRY 2022 060000 ENGINE AND ENGINE COOLING
TOYOTA HIGHLANDER 2022 060000 ENGINE AND ENGINE COOLING
TOYOTA TACOMA 2022 060000 ENGINE AND ENGINE COOLING
TOYOTA AVALON 2021 060000 ENGINE AND ENGINE COOLING
TOYOTA CAMRY 2021 060000 ENGINE AND ENGINE COOLING
TOYOTA HIGHLANDER 2021 060000 ENGINE AND ENGINE COOLING
TOYOTA TACOMA 2021 060000 ENGINE AND ENGINE COOLING
TOYOTA AVALON 2020 060000 ENGINE AND ENGINE COOLING
TOYOTA CAMRY 2020 060000 ENGINE AND ENGINE COOLING
TOYOTA HIGHLANDER 2020 060000 ENGINE AND ENGINE COOLING
TOYOTA SIENNA 2020 060000 ENGINE AND ENGINE COOLING
TOYOTA TACOMA 2020 060000 ENGINE AND ENGINE COOLING
TOYOTA AVALON 2019 060000 ENGINE AND ENGINE COOLING
TOYOTA CAMRY 2019 060000 ENGINE AND ENGINE COOLING
TOYOTA HIGHLANDER 2019 060000 ENGINE AND ENGINE COOLING
TOYOTA HIGHLANDER HYBRID 2019 060000 ENGINE AND ENGINE COOLING
TOYOTA SIENNA 2019 060000 ENGINE AND ENGINE COOLING
TOYOTA TACOMA 2019 060000 ENGINE AND ENGINE COOLING
TOYOTA CAMRY 2018 060000 ENGINE AND ENGINE COOLING
TOYOTA HIGHLANDER 2018 060000 ENGINE AND ENGINE COOLING
TOYOTA HIGHLANDER HYBRID 2018 060000 ENGINE AND ENGINE COOLING
TOYOTA SIENNA 2018 060000 ENGINE AND ENGINE COOLING
TOYOTA TACOMA 2018 060000 ENGINE AND ENGINE COOLING
TOYOTA HIGHLANDER 2017 060000 ENGINE AND ENGINE COOLING
TOYOTA HIGHLANDER HYBRID 2017 060000 ENGINE AND ENGINE COOLING
TOYOTA SIENNA 2017 060000 ENGINE AND ENGINE COOLING
TOYOTA TACOMA 2017 060000 ENGINE AND ENGINE COOLING
TOYOTA TACOMA 2016 060000 ENGINE AND ENGINE COOLING

Related TOYOTA Recalls

CampaignModelYearComponentSummary
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What Should You Do?

If your vehicle is affected by this TSB, contact your authorized TOYOTA dealer. Bring this bulletin ID (T-TT-0686-22) when you visit. If under warranty, the repair should be free. If your warranty has expired, ask about goodwill coverage — manufacturers sometimes cover TSB-related repairs beyond the warranty period.

Frequently Asked Questions

A recall is a mandatory safety fix — the manufacturer must repair every affected vehicle for free. A TSB is an advisory document that describes a known issue and the recommended fix, but repairs are not required. However, some TSBs eventually lead to recalls if the issue poses a safety risk. TSBs are generally issued for quality or performance problems, while recalls address safety defects.

If your vehicle is still under the manufacturer's warranty, TSB-related repairs are typically covered at no cost. If your warranty has expired, you can ask the dealer about goodwill or customer assistance programs. Many manufacturers will cover or partially cover repairs for well-known issues, especially if the TSB was issued recently or affects a large number of vehicles.

Check the make, model, and model year listed above against your vehicle. If they match, this bulletin likely applies. However, TSBs may only affect vehicles with specific production dates, VIN ranges, or configurations. Your dealer can confirm by entering your VIN into their service system, which will show all applicable TSBs and recalls.

This data comes from the National Highway Traffic Safety Administration (NHTSA). Manufacturers are required to submit copies of all communications (including TSBs) sent to their dealers to NHTSA. The agency makes this data publicly available as part of its vehicle safety monitoring program.