Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2018 Toyota 86 GT, Standard TransFACTORY OEM SERVICE PROCEDURE
ENGINE IMMOBILISER SYSTEM (w/o Smart Key System)
ENGINE IMMOBILISER SYSTEM(W/O SMART KEY SYSTEM) DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION - MAIN BODY ECU (NETWORK GATEWAY ECU)
| DTC Code | Description |
|---|---|
| B1401*1 | M Check NG |
| B1402 | Immobiliser Key Check NG |
| B1405*2 | SCU Check NG |
| B1406*2 | SCU EEPROM NG |
| B1407*1 | M Communication Circuit |
| B1408*1 | Meter EEPROM Circuit |
| B1409*2 | SCU Communication Circuit |
| B1410 | Transponder Communication Circuit |
| B1411 | Immobiliser Antenna Circuit |
ENGINE IMMOBILISER SYSTEM(W/O SMART KEY SYSTEM) DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION - ECM
| DTC Code | Description |
|---|---|
| B1571 | Immobiliser Key Check NG |
| B1572 | Immobiliser System Communication Malfunction |
| B1576 | Key Write Malfunction to EFI ECU |
| B1577 | Immobiliser System EEPROM Malfunction |
| B1578 | Immobiliser System Data Mismatch Key |
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
Rather have a pro handle this?
A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.
Comes to youSame-day available12-month warranty
Get a Free QuoteNo obligation. See pricing before you book.