TPMS System Initialization Required
2017-2020 Toyota 86 2.0L H4
Description
The TPMS system requires sensor initialization/relearn after tire rotation, sensor replacement, or wheel service.
Symptoms
- TPMS warning light on
- Tire positions showing incorrect locations
- Pressures displayed for wrong wheels
Common Causes
- Tire rotation without TPMS relearn
- Sensor replaced without programming
- Wheels swapped between vehicles
- TPMS reset not performed after service
Diagnostic Steps
- Perform TPMS sensor relearn procedure
- Use TPMS tool to trigger each sensor in order
- Follow vehicle-specific relearn procedure
- Verify all sensors are registered
Repair Notes
Perform TPMS relearn/initialization procedure per manufacturer instructions after any tire service.
Related Codes
Other Body Codes
- B0001Driver Frontal Stage 1 Deployment Control
- B0002Driver Frontal Stage 2 Deployment Control
- B0003Passenger Frontal Stage 1 Deployment Control
- B0004Passenger Frontal Stage 2 Deployment Control
- B0005Driver Knee Airbag Deployment Circuit
- B0006Passenger Knee Airbag Deployment Circuit
- B0007Rear Left Side Airbag Deployment Circuit
- B0008Rear Right Side Airbag Deployment Circuit
- B0009Rear Center Airbag Deployment Circuit
- B0010Driver Side Airbag Deployment
B1020 on Other Vehicles
Toyota 4Runner
2003-2009 4.0L V6
Toyota 4Runner
2003-2009 4.7L V8
Toyota 4Runner
2010-2024 4.0L V6
Toyota Alphard
2023-2025 2.4L I4 Turbo T24A-FTS
Toyota Alphard
2023-2025 2.5L I4 Hybrid A25A-FXS
Toyota Aqua
2011-2021 1.5L I4 Hybrid 1NZ-FXE
Toyota Aqua
2021-2025 1.5L I3 Hybrid M15A-FXE
Toyota Avalon
2005-2012 3.5L V6
Common Questions
What does code B1020 mean on a 2017-2020 Toyota 86?
B1020 stands for "TPMS System Initialization Required". The TPMS system requires sensor initialization/relearn after tire rotation, sensor replacement, or wheel service.
What are the symptoms of B1020 on a Toyota 86?
Common symptoms of B1020 include: TPMS warning light on, Tire positions showing incorrect locations, Pressures displayed for wrong wheels.
What causes B1020 on a 2017-2020 Toyota 86?
Common causes of B1020 include: Tire rotation without TPMS relearn, Sensor replaced without programming, Wheels swapped between vehicles, TPMS reset not performed after service.