Toyota TSB #T-TT-0686-22
2018 Toyota Sienna
Affected Component: ENGINE AND ENGINE COOLING
- 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 to a leaking exhaust system. If you encounter a vehicle with any of these DTCs