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 MANUALSTOYOTA1994SUPRA L6-183 2997CC 3.0L DOHC TURBO (2JZ-GTE)REPAIR AND DIAGNOSISA L L DIAGNOSTIC TROUBLE CODES ( DTC )
1994 Toyota Supra L6-183 2997cc 3.0L DOHC Turbo (2JZ-GTE)
A L L Diagnostic Trouble Codes ( DTC )
1994 Toyota Supra L6-183 2997cc 3.0L DOHC Turbo (2JZ-GTE)SECTION A L L Diagnostic Trouble Codes ( DTC )
Testing and Inspection- Diagnostic Trouble Code Descriptions
- ABS (Antilock Brake System)
- ABS W/Traction Control (TRAC)
- Cruise Control System
- Engine Control System
- Code 12 - G, NE Signal Circuit No. 1
- Code 13 - G, NE Signal Circuit No. 2
- Code 14 - Ignition Signal Circuit
- Code 16 - Automatic Transmission Control Signal
- Code 21 - Main Oxygen Sensor Signal - Front
- Code 22 - Engine Coolant Temperature Sensor Signal
- Code 24 - Intake Air Temperature Sensor Signal
- Code 25 - Air-Fuel Ratio Lean Malfunction
- Code 26 - Air-Fuel Ratio Rich Malfunction
- Code 27 - Sub-Oxygen Sensor Signal
- Code 31 - Mass Air Flow Meter Signal
- Code 34 - Turbo Pressure Malfunction
- Code 35 - Turbo Pressure Sensor Circuit
- Code 41 - Throttle Position Sensor Signal
- Code 42 - No. 1 Vehicle Speed Sensor Signal
- Code 43 - Starter Signal
- Code 47 - Sub-Throttle Position Sensor Signal
- Code 51 - Switch Condition Signal
- Code 52 - Knock Sensor Signal (front)
- Code 53 - Knock Control Signal
- Code 55 - Knock Sensor Signal (Rear)
- Code 71 - Exhaust Gas Recirculation System Malfunction
- Code 78 - Fuel Pump Control Signal
- Restraint Systems
- Transmission Control Systems
- Manufacturer Code Charts
- Antilock Brake System (ABS)
- ABS W/Traction Control (TRAC)
- Engine Control System
- Restraint Systems
- Transmission Control Systems
- Related Tests, Information and Procedures
- Diagnostic Trouble Code Descriptions
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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.