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.
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HOMESERVICE MANUALSTOYOTA201886 GT, STANDARD TRANSREPAIR AND DIAGNOSIS (SINGLE PAGE)BODY & FRAMEDOOR LOCKSSMART KEY SYSTEM (KEYLESS START) - DIAGNOSTIC CODES & SYMPTOM TESTS
2018 Toyota 86 GT, Standard Trans
Smart Key System (Keyless Start) - Diagnostic Codes & Symptom Tests
2018 Toyota 86 GT, Standard TransSECTION Smart Key System (Keyless Start) - Diagnostic Codes & Symptom Tests
- SMART KEY SYSTEM (for Start Function)
- Diagnostic Codes
- DTC B2271: Ignition Hold Monitor Malfunction [03/2017 - ]
- DTC B2274: ACC Monitor Malfunction [03/2017 - ]
- DTC B2275: STSW Monitor Malfunction [03/2017 - ]
- DTC B2276: ACCR Signal Circuit Malfunction [03/2017 - ]
- DTC B2277: Detecting Vehicle Submersion [03/2017 - ]
- DTC B2282: Vehicle Speed Signal Malfunction; DTC B2283: Vehicle Speed Sensor Malfunction [03/2017 - ]
- DTC B2284: Brake Signal Malfunction [03/2017 - ]
- DTC B2285: Steering Lock Position Signal Circuit Malfunction [03/2017 - ]
- DTC B2286: Runnable Signal Malfunction [03/2017 - ]
- DTC U0073: Control Module Communication Bus Off; DTC U0100: Lost Communication with ECM / PCM "A"; DTC U0101: Lost Communication with TCM; DTC U0122: Lost Communication with Vehicle Dynamics Control Module; DTC U0140: Lost Communication with Body Control Module; DTC U0155: Lost Communication with Instrument Panel Cluster Control Module (Combination Meter); DTC U0401: Invalid Data Received from ECM/PCM "A"; DTC U0422: Invalid Data Received from Body Control Module [03/2017 - ]
- Symptom Tests
- Diagnostic Codes
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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.