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 MANUALSTOYOTA2000TACOMA BASE, 2D PICKUP, 2.4 L, STANDARDREPAIR AND DIAGNOSISENGINE PERFORMANCETESTING & DIAGNOSISENGINE CONTROL SYSTEM SELF-DIAGNOSTICS - 4-CYLINDERDIAGNOSTIC TROUBLE CODE DEFINITIONS
2000 Toyota Tacoma Base, 2D Pickup, 2.4 L, Standard
Diagnostic Trouble Code Definitions
2000 Toyota Tacoma Base, 2D Pickup, 2.4 L, StandardSECTION Diagnostic Trouble Code Definitions
DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION
| DTC (1) | Description | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| P0100 (2) | Mass Airflow (MAF) Meter Circuit | ||||||||
| P0101 | Mass Airflow (MAF) Meter Circuit Range/Performance | ||||||||
| P0110 (2) | Intake Air Temperature (IAT) Sensor Circuit | ||||||||
| P0115 (2) | Engine Coolant Temperature (ECT) Sensor Circuit | ||||||||
| P0116 | Engine Coolant Temperature (ECT) Sensor Circuit Range/Performance | ||||||||
| P0120 (2) | Throttle Position (TP) Sensor Circuit | ||||||||
| P0121 | Throttle Position (TP) Sensor Circuit Range/Performance | ||||||||
| P0125 | Insufficient Coolant Temperature For Closed Loop Fuel Control (Except Calif. Emissions) | ||||||||
| P0125 | Insufficient Coolant Temperature For Closed Loop Fuel Control (Calif. Emissions) | ||||||||
| P0130 | Heated Oxygen Sensor No. 1 Circuit (Except Calif. Emissions) | ||||||||
| P0133 | Heated Oxygen Sensor No. 1 Circuit Slow Response (Except Calif. Emissions) | ||||||||
| P0135 (2) | Heated Oxygen Sensor No. 1 Heater Circuit (Except Calif. Emissions) | ||||||||
| P0136 | Heated Oxygen Sensor No. 2 Circuit | ||||||||
| P0141 (2) | Heated Oxygen Sensor No. 2 Heater Circuit | ||||||||
| P0171 | System Too Lean (Except Calif. Emissions) | ||||||||
| P0171 | System Too Lean (Calif. Emissions) | ||||||||
| P0172 | System Too Rich (Except Calif. Emissions) | ||||||||
| P0172 | System Too Rich (Calif. Emissions) | ||||||||
| P0300 | Random Misfire Detected | ||||||||
| P0301 | Cylinder No. 1 Misfire Detected | ||||||||
| P0302 | Cylinder No. 2 Misfire Detected | ||||||||
| P0303 | Cylinder No. 3 Misfire Detected | ||||||||
| P0304 | Cylinder No. 4 Misfire Detected | ||||||||
| P0325 (2) | Knock Sensor Circuit | ||||||||
| P0335 | Crankshaft Position (CKP) Sensor Circuit | ||||||||
| P0340 (2) | Camshaft Position (CMP) Sensor Circuit | ||||||||
| P0401 | Insufficient Exhaust Gas Recirculation (EGR) Flow Detected | ||||||||
| P0402 | Excessive Exhaust Gas Recirculation (EGR) Flow Detected | ||||||||
| P0420 | Catalyst System Efficiency Below Threshold (Except Calif. Emissions) | ||||||||
| P0420 | Catalyst System Efficiency Below Threshold (Calif. Emissions) | ||||||||
| P0440 | Evaporative Emission Control System | ||||||||
| P0441 | Incorrect EVAP Purge Flow | ||||||||
| P0446 | EVAP Vent Control Circuit | ||||||||
| P0450 | EVAP Pressure Sensor Circuit | ||||||||
| P0451 | EVAP Pressure Sensor Range/Performance | ||||||||
| P0500 | Vehicle Speed Sensor Circuit | ||||||||
| P0505 | Idle Air Control (IAC) System Circuit (Except Calif. Emissions) | ||||||||
| P0505 | Idle Air Control (IAC) System Circuit (Calif. Emissions) | ||||||||
| P0710 (3) | Transmission Fluid Temperature Sensor Malfunction | ||||||||
| P0750 (3) | Shift Solenoid Valve No. 1 Malfunction | ||||||||
| P0753 (3) | Shift Solenoid Valve No. 1 Electrical Malfunction | ||||||||
| P0755 (3) | Shift Solenoid Valve No. 2 Malfunction | ||||||||
| P0758 (3) | Shift Solenoid Valve No. 2 Electrical Malfunction | ||||||||
| P0770 (3) | Lock-Up Solenoid Malfunction | ||||||||
| P0773 (3) | Lock-Up Solenoid Circuit Electrical Malfunction | ||||||||
| P1130 | Air/Fuel Sensor Circuit Range/Performance (Calif. Emissions) | ||||||||
| P1133 | Air/Fuel Sensor Circuit Response (Calif. Emissions) | ||||||||
| P1135 | Air/Fuel Sensor Heater Circuit (Calif. Emissions) | ||||||||
| P1300 | Ignitor No. 1 Circuit (Except Calif. Emissions) | ||||||||
| P1300 (2) | Ignitor No. 1 Circuit (Calif. Emissions) | ||||||||
| P1305 (2) | Ignitor No. 2 Circuit (Calif. Emissions) | ||||||||
| P1310 (2) | Ignitor No. 2 Circuit (Except Calif. Emissions) | ||||||||
| P1310 (2) | Ignitor No. 3 Circuit (Calif. Emissions) | ||||||||
| P1315 (2) | Ignitor No. 4 Circuit (Calif. Emissions) | ||||||||
| P1335 (4) | Crankshaft Position (CKP) Sensor Circuit | ||||||||
| P1520 | Stoplight Switch Signal Circuit (A/T) | ||||||||
| P1600 | ECM BATT Circuit | ||||||||
| P1700 (3) | Vehicle Speed Sensor No. 2 Malfunction | ||||||||
| P1780 | Park/Neutral Position (PNP) Switch Circuit (A/T) | ||||||||
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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.