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)ENGINE PERFORMANCETESTING & DIAGNOSISENGINE CONTROL SYSTEM - DIAGNOSTIC CODES (4 OF 6)
2018 Toyota 86 GT, Standard Trans
Engine Control System - Diagnostic Codes (4 Of 6)
2018 Toyota 86 GT, Standard TransSECTION Engine Control System - Diagnostic Codes (4 Of 6)
- SFI System
- DTC P0455: Evaporative Emission Control System Leak Detected (Gross Leak); DTC P0456: Evaporative Emission Control System Leak Detected (Very Small Leak); DTC P1451: Fuel Tank Pressure Sensor Range/Performance; DTC P2404: Evaporative Emission System Leak Detection Pump Sense Circuit Range / Performance [06/2016 - 12/2017]
- DTC P0455: Evaporative Emission Control System Leak Detected (Gross Leak); DTC P0456: Evaporative Emission Control System Leak Detected (Very Small Leak); DTC P1451: Fuel Tank Pressure Sensor Range/Performance; DTC P2404: Evaporative Emission System Leak Detection Pump Sense Circuit Range / Performance [12/2017 - 07/2018]
- DTC P0455: Evaporative Emission Control System Leak Detected (Gross Leak); DTC P0456: Evaporative Emission Control System Leak Detected (Very Small Leak); DTC P1451: Fuel Tank Pressure Sensor Range/Performance; DTC P2404: Evaporative Emission System Leak Detection Pump Sense Circuit Range / Performance [07/2018 - ]
- DTC P0458: Evaporative Emission System Purge Control Valve Circuit Low; DTC P0459: Evaporative Emission System Purge Control Valve Circuit High [06/2016 - ]
- DTC P0506: Idle Air Control System RPM Lower than Expected; DTC P0507: Idle Air Control System RPM Higher than Expected [06/2016 - 07/2018]
- DTC P0506: Idle Air Control System RPM Lower than Expected; DTC P0507: Idle Air Control System RPM Higher than Expected [07/2018 - 08/2019]
- DTC P0506: Idle Air Control System RPM Lower than Expected; DTC P0507: Idle Air Control System RPM Higher than Expected [08/2019 - ]
- DTC P050A: Cold Start Idle Air Control System Performance; DTC P050B: Cold Start Ignition Timing Performance [06/2016 - 12/2017]
- DTC P050A: Cold Start Idle Air Control System Performance; DTC P050B: Cold Start Ignition Timing Performance [12/2017 - 07/2018]
- DTC P050A: Cold Start Idle Air Control System Performance; DTC P050B: Cold Start Ignition Timing Performance [07/2018 - ]
- DTC P0512: Starter Request Circuit; DTC P0616: Starter Relay Circuit Low; DTC P0617: Starter Relay Circuit High; DTC P081A: Starter Disable Circuit Low [03/2017 - ]
- DTC P0560: System Voltage [06/2016 - ]
- DTC P0604: Internal Control Module Random Access Memory (RAM) Error; DTC P0605: Internal Control Module Read Only Memory (ROM) Error; DTC P0606: ECM / PCM Processor; DTC P060A: Internal Control Module Monitoring Processor Performance; DTC P060B: Internal Control Module A/D Processing Performance; DTC P062F: Internal Control Module EEPROM Error [06/2016 - 12/2017]
- DTC P0604: Internal Control Module Random Access Memory (RAM) Error; DTC P0605: Internal Control Module Read Only Memory (ROM) Error; DTC P0606: ECM / PCM Processor; DTC P060A: Internal Control Module Monitoring Processor Performance; DTC P060B: Internal Control Module A/D Processing Performance; DTC P062F: Internal Control Module EEPROM Error [12/2017 - ]
- DTC P0616: Starter Relay Circuit Low; DTC P0617: Starter Relay Circuit High [06/2016 - 03/2017]
- DTC P062D: No. 1 Fuel Injector Driver Circuit Performance; DTC P1261: DI Injector Circuit / Open - (Cylinder 1); DTC P1262: DI Injector Circuit / Open - (Cylinder 2); DTC P1263: DI Injector Circuit / Open - (Cylinder 3); DTC P1264: DI Injector Circuit / Open - (Cylinder 4) [06/2016 - ]
- DTC P0685: ECM / PCM Power Relay Control Circuit / Open [06/2016 - ]
- DTC P0700: Transmission Control System (MIL Request) [06/2016 - ]
- DTC P0851: Park / Neutral Switch Input Circuit Low; DTC P0852: Park / Neutral Switch Input Circuit High [06/2016 - 12/2017]
- DTC P0851: Park / Neutral Switch Input Circuit Low; DTC P0852: Park / Neutral Switch Input Circuit High [12/2017 - 07/2018]
- DTC P0851: Park / Neutral Switch Input Circuit Low; DTC P0852: Park / Neutral Switch Input Circuit High [07/2018 - ]
- DTC P1109: Throttle Deposit Malfunction; DTC P2109: Throttle / Pedal Position Sensor "A" Minimum Stop Performance [06/2016 - ]
- DTC P1160: Throttle Valve Return Spring Malfunction; DTC P2119: Throttle Actuator Control Throttle Body Range / Performance [06/2016 - ]
- DTC P119E: Bank 1 Air-Fuel Ratio Imbalance for Port Injection; DTC P119F: Bank 1 Air-Fuel Ratio Imbalance for Direct Injection; DTC P219A: Bank 1 Air-Fuel Ratio Imbalance [06/2016 - 12/2017]
- DTC P119E: Bank 1 Air-Fuel Ratio Imbalance for Port Injection; DTC P119F: Bank 1 Air-Fuel Ratio Imbalance for Direct Injection; DTC P219A: Bank 1 Air-Fuel Ratio Imbalance [12/2017 - 07/2018]
- DTC P119E: Bank 1 Air-Fuel Ratio Imbalance for Port Injection; DTC P119F: Bank 1 Air-Fuel Ratio Imbalance for Direct Injection; DTC P219A: Bank 1 Air-Fuel Ratio Imbalance [07/2018 - 08/2019]
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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.