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 - 3.4LTESTING & REPAIR PROCEDURECLEARING TROUBLE CODES
1995 Toyota T100 DX, RWD, Standard
Clearing Trouble Codes
1995 Toyota T100 DX, RWD, StandardSECTION Clearing Trouble Codes
WARNING:
Ensure all codes, "Readiness", and/or "Once Per Trip Tests" have been recorded before clearing codes. Information may be erased when code information is cleared. Certain driving pattern tests must be completed to satisfy all I/M inspection criteria. Driving test (drive cycle) information is not available from manufacturer.
Once repairs have been performed, codes must be cleared from ECM memory. Codes may be cleared by following methods:
- Scan tool (follow manufacturer's instructions).
- Remove EFI fuse (15-amp) from engine compartment fuse box, near the battery, for 10 seconds or more to clear memory in ECM.
- Disconnecting negative battery cable (memory for electronic components will be also be canceled).
TROUBLE CODE IDENTIFICATION
| Code | Component/System | Most Likely Cause | ||
|---|---|---|---|---|
| P0100 | Mass Airflow (MAF) Sensor Circuit | Open/Short Circuit | ||
| P0101 | Mass Airflow (MAF) Sensor Circuit | MAF Sensor Range/Performance Problem | ||
| P0110 | Intake Air Temperature (IAT) Sensor Circuit | Open/Short Circuit | ||
| P0115 | Coolant Temperature Sensor (CTS) Circuit | Open/Short Circuit | ||
| P0116 | Coolant Temperature Sensor (CTS) Circuit | Range/Performance Problem | ||
| P0120 | Throttle Position Sensor (TPS) Circuit | Open/Short Circuit | ||
| P0121 | Throttle Position Sensor (TPS) Circuit | Range/Performance Problem | ||
| P0125 | Heated Oxygen Sensor | Insufficient Coolant Temp. For Closed Loop Fuel Control | ||
| P0130 | Heated Oxygen Sensor (Front Sensor) Circuit | Sensor Malfunction | ||
| P0133 | Heated Oxygen Sensor Slow Response | Front Sensor Malfunction | ||
| P0135 | Heated Oxygen Sensor (Front Sensor) Circuit | Open/Short Circuit | ||
| P0136 | Heated Oxygen Sensor (Rear Sensor) Circuit | Open/Short Circuit | ||
| P0141 | Heated Oxygen Sensor (Rear Sensor) Circuit | Open/Short Circuit | ||
| P0170 | Fuel Trim Malfunction | Too Lean Or Rich | ||
| P0300 | Random Misfire Detected | Miscellaneous | ||
| P0301 | Cylinder No. 1 Misfire Detected | Miscellaneous | ||
| P0302 | Cylinder No. 2 Misfire Detected | Miscellaneous | ||
| P0303 | Cylinder No. 3 Misfire Detected | Miscellaneous | ||
| P0304 | Cylinder No. 4 Misfire Detected | Miscellaneous | ||
| P0305 | Cylinder No. 5 Misfire Detected | Miscellaneous | ||
| P0306 | Cylinder No. 6 Misfire Detected | Miscellaneous | ||
| P0325 | Knock Sensor No. 1 Circuit Malfunction | Open/Short Circuit | ||
| P0330 | Knock Sensor No. 2 Circuit Malfunction | Open/Short Circuit | ||
| P0335 | Crankshaft Position (CKP) Sensor Circuit | Open/Short Circuit | ||
| P0340 | Camshaft Position (CMP) Sensor Circuit | Open/Short Circuit | ||
| P0401 | Insufficient Exhaust Gas Recirculation (EGR) Flow Detected | EGR Valve | ||
| P0402 | Excessive Exhaust Gas Recirculation (EGR) Flow Detected | EGR Valve | ||
| P0420 | Catalyst System Efficiency Below Threshold | Catalytic Convert. | ||
| P0441 | (1) Evaporative Emission Control System, Incorrect Purge Flow | EVAP VSV | ||
| P0500 | Vehicle Speed Sensor (VSS) Malfunction | Open/Short Circuit | ||
| P0505 | Idle Air Control (IAC) System Malfunction | IAC Valve | ||
| P0510 | Closed Throttle Position Switch Malfunction | Throttle Position Sensor | ||
| P1300 | Igniter Circuit Malfunction | Igniter IGF Or IGT Open/Short Circuit | ||
| P1335 | Crankshaft Position (CKP) Sensor Circuit | Open/Short Circuit | ||
| P1500 | Starter Signal Circuit Malfunction | Starter Signal Circuit Open/Short Circuit | ||
| P1600 | ECM BATT Malfunction | Back-Up Power Source Open Circuit | ||
| P1605 | Knock Control CPU Malfunction | ECM | ||
| P1780 | Park/Neutral Position (PNP) Switch Malfunction | Short Circuit | ||
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RENDER: 1.0x
NO RELATED
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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.