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.
2003 Toyota Matrix Base, FWD, AutomaticFACTORY OEM SERVICE PROCEDURE
Diagnostic Trouble Code Definitions
DIAGNOSTIC TROUBLE CODE DEFINITIONS
| DTC (1) | Description | ||||||
|---|---|---|---|---|---|---|---|
| P0100 (2) | Mass Air Flow Circuit Malfunction | ||||||
| P0101 | Mass Air Flow Circuit Range/Performance Problem | ||||||
| P0110 (2) | Intake Air Temperature Circuit Malfunction | ||||||
| P0115 (2) | Engine Coolant Temperature Circuit Malfunction | ||||||
| P0116 | Engine Coolant Temperature Circuit Range/Performance Problem | ||||||
| P0120 (2) | Throttle/Pedal Position Sensor/Switch "A" Circuit Malfunction | ||||||
| P0121 | Throttle/Pedal Position Sensor/Switch "A" Circuit Range/Performance Problem | ||||||
| P0125 | Insufficient Coolant Temperature For Closed Loop Fuel Control | ||||||
| P0128 | Thermostat Malfunction (Corolla Model) | ||||||
| P0128 | Thermostat Malfunction (Matrix Model) | ||||||
| P0130 | Heated Oxygen Sensor Circuit Malfunction (Bank No. 1 Sensor No. 1) | ||||||
| P0133 | Heated Oxygen Sensor Slow Response (Bank No. 1 Sensor No. 1) | ||||||
| P0135 (2) | Heated Oxygen Sensor Heater Circuit Malfunction (Bank No. 1 Sensor No. 1) | ||||||
| P0136 | Heated Oxygen Sensor Circuit Malfunction (Bank No. 1 Sensor No. 2) | ||||||
| P0141 (2) | Heated Oxygen Sensor Heater Circuit Malfunction (Bank No. 1 Sensor No. 2) | ||||||
| P0171 | System Too Lean (Fuel Trim Bank No. 1) | ||||||
| P0172 | System Too Rich (Fuel Trim Bank No. 1) | ||||||
| P0300 | Random/Multiple Cylinder 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 No. 1 Circuit Malfunction (Bank No. 1) | ||||||
| P0335 | Crankshaft Position "A" Sensor Circuit Malfunction | ||||||
| P0340 | Camshaft Position Sensor Circuit Malfunction | ||||||
| P0420 | Catalyst System Efficiency Below Threshold (Bank No. 1) | ||||||
| P0440 | EVAP System Malfunction | ||||||
| P0441 | EVAP System Incorrect Purge Flow | ||||||
| P0442 | EVAP System Malfunction | ||||||
| P0446 | EVAP System Malfunction | ||||||
| P0450 | EVAP System Pressure Sensor Malfunction | ||||||
| P0451 | EVAP System Pressure Sensor Range/Performance | ||||||
| P0500 | Vehicle Speed Sensor Malfunction | ||||||
| P0505 | Idle Control System Malfunction | ||||||
| P1300 (2) | Igniter Circuit Malfunction (No. 1) | ||||||
| P1305 (2) | Igniter Circuit Malfunction (No. 2) | ||||||
| P1310 (2) | Igniter Circuit Malfunction (No. 3) | ||||||
| P1315 (2) | Igniter Circuit Malfunction (No. 4) | ||||||
| P1335 (3) | Crankshaft Position Sensor Circuit Malfunction (During Engine Running) | ||||||
| P1346 | Variable Valve Timing Sensor/Camshaft Position Sensor Circuit Range/Performance Problem (Bank No. 1) | ||||||
| P1349 | Variable Valve Timing System Malfunction (Bank No. 1) | ||||||
| P1520 | Stop Light Switch Circuit Malfunction (A/T Only) | ||||||
| P1600 | Back-Up Power Source Circuit Malfunction | ||||||
| P1656 (2) | Oil Control Valve Circuit Malfunction (Bank No. 1) | ||||||
| P1690 | OCV For VVTL Circuit Malfunction (Matrix 2ZZ-GE Engine Model Only) | ||||||
| P1692 | OCV For VVTL Open Malfunction / Bank No. 1 (Matrix 2ZZ-GE Engine Model Only) | ||||||
| P1693 | OCV For VVTL Close Malfunction / Bank No. 1 (Matrix 2ZZ-GE Engine Model Only) | ||||||
| P1780 | Park/Neutral Position Switch Malfunction (A/T Only) | ||||||
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Factory Service Tools
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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.
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