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 MANUALSTOYOTA1995T100 DX, RWD, STANDARDREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCESYSTEMENGINE CONTROLS - TESTS W/CODES - 2.7L
1995 Toyota T100 DX, RWD, Standard
Engine Controls - Tests W/Codes - 2.7L
1995 Toyota T100 DX, RWD, StandardSECTION Engine Controls - Tests W/Codes - 2.7L
- Introduction
- Self-Diagnostic System
- Testing & Repair Procedure
- Scan Tester Problems
- Component Location
- Summary
- Diagnostic Testing
- Notes
- Code P0100 - Mass Airflow (MAF) Sensor Circuit
- Code P0101 - Mass Airflow (MAF) Sensor Circuit Range/Performance Problem
- Code P0110 - Intake Air Temperature (IAT) Sensor Circuit
- Code P0115 - Coolant Temperature Sensor (Cts) Circuit
- Code P0116 - Coolant Temperature Sensor (Cts) Circuit Range/Performance Problem
- Code P0120 - Throttle Position Sensor (TPS) Circuit Malfunction
- Code P0121 - Throttle Position Sensor (TPS) Circuit Range/Performance Problem
- Code P0125 - Insufficient Coolant Temperature For Closed Loop Fuel Control
- Code P0130 - Heated Oxygen Sensor (Front Sensor) Circuit
- Code P0133 - Heated Oxygen Sensor (Front Sensor) Circuit Slow Response
- Code P0135 - Heated Oxygen Sensor (Front Sensor) Circuit
- Code P0136 - Heated Oxygen Sensor (Rear Sensor) Circuit
- Code P0141 - Heated Oxygen Sensor (Rear Sensor) Circuit
- Code P0170 - Fuel Trim Malfunction
- Code P0300 - Random/Multiple Misfire Detected
- Codes P0301 - P0304 - Cylinders No. 1-4 Misfire Detected
- Code P0325 - Knock Sensor No. 1 Circuit
- Code P0335 - Crankshaft Position (CKP) Sensor "A" Circuit
- Code P0336 - Crankshaft Position (CKP) Sensor "A" Circuit Range/Performance
- Code P0340 - Camshaft Position (CMP) Sensor Circuit
- Code P0401 - Insufficient Exhaust Gas RECIRCULATION (EGR) Flow Detected
- Code P0402 - Excessive Exhaust Gas RECIRCULATION (EGR) Flow Detected
- Code P0420 - Catalyst System Efficiency Below Threshold
- Code P0441 - Evaporative Emission Control System, Incorrect Purge Flow (CALIF. Only)
- Code P0500 - Vehicle Speed Sensor Malfunction
- Code P0505 - Idle Air Control System Malfunction
- Code P0510 - Closed Throttle Position Switch Malfunction
- Code P1300 - IGNITOR Circuit Malfunction
- Code P1335 - Crankshaft Position (CKP) Sensor Circuit Malfunction During Engine Operation
- Code P1500 - Starter Signal Circuit Malfunction
- Code P1600 - ECM Batt Malfunction
- Code P1780 - Park/Neutral Position (PNP) Switch
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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.