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 MANUALSTOYOTA2004MATRIX XR, FWD, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 136 (ENGINE CONTROL SYSTEM SELF DIAGNOSTICS - 4-CYLINDER)
2004 Toyota Matrix XR, FWD, Standard
Section 136 (Engine Control System Self Diagnostics - 4-Cylinder)
2004 Toyota Matrix XR, FWD, StandardSECTION Section 136 (Engine Control System Self Diagnostics - 4-Cylinder)
WARNING: This page is about a different car, the 2003 Toyota Tacoma. However, it is still accessible from the selected car via links, so may be relevant.
- Introduction
- Self-Diagnostic System
- Scan Tool Problems
- Summary
- Diagnostic Trouble Code Definitions
- Diagnostic Tests
- Notes
- DTC P0036: Oxygen Sensor Heater Control Circuit (Bank 1 Sensor 2)
- DTC P0100: Mass Airflow Meter Circuit
- DTC P0101: Mass Airflow Meter Circuit Range/Performance
- DTC P0110: Intake Air Temperature Sensor Circuit
- DTC P0115: Engine Coolant Temperature Sensor Circuit
- DTC P0116: Engine Coolant Temperature Sensor Circuit Range/Performance &/Or DTC P0125: Insufficient Coolant Temperature For Closed Loop Fuel Control
- DTC P0120: Throttle Pedal Position Sensor/Switch "A" Circuit
- DTC P0121: Throttle Pedal Position Sensor/Switch "A" Circuit Range/Performance
- DTC P0128: Thermostat Malfunction
- DTC P0134: Oxygen Sensor Circuit No Activity Detected (Bank 1 Sensor 1)
- DTC P0135: Oxygen Sensor Heater Circuit (Bank 1 Sensor 1)
- DTC P0136: Oxygen Sensor Circuit Malfunction (Bank 1 Sensor 2)
- DTC P0171: System Too Lean &/Or DTC P0172: System Too Rich
- DTC P0300 &/Or DTC P0301, DTC P0302, DTC P0303 Or DTC P0304
- DTC P0325: Knock Sensor 1 Circuit Malfunction
- DTC P0335: Crankshaft Position Sensor "A" Circuit &/Or DTC P0339: Crankshaft Position Sensor "A" Circuit Intermittent
- DTC P0340: Camshaft Position Sensor "A" Circuit (Bank 1) &/Or DTC P0341: Camshaft Position Sensor "A" Circuit Range/Performance (Bank 1)
- DTC P0351, DTC P0352, DTC P0353 &/Or DTC P0354
- DTC P0401: Insufficient Exhaust Gas RECIRCULATION Flow Detected
- DTC P0402: Excessive Exhaust Gas RECIRCULATION Flow Detected
- DTC P0420: Catalyst System Efficiency Below Threshold
- DTC P0441: EVAP Emission Control System Incorrect EVAP Purge Flow & DTC P0446: EVAP Emission Control System Vent Control Circuit
- DTC P0442: EVAP Emission Control System Leak Detected (Small Leak) & DTC P0456: EVAP Emission Control System Leak Detected (Very Small Leak)
- DTC P0450: EVAP Emission Control System Pressure Sensor Malfunction &/Or DTC P0451: EVAP Emission Control System Pressure Sensor Range/Performance
- DTC P0500: Vehicle Speed Sensor "A"
- DTC P0505: Idle Air Control System & DTC P0511: Idle Air Control Circuit
- DTC P0560: System Voltage
- DTC P0617: Starter Relay Circuit High
- DTC P0724: Brake Switch "B" Circuit High
- DTC P2195: Oxygen (A/F) Sensor Circuit Stuck Lean (Bank 1 Sensor 1) & DTC P2196: Oxygen (A/F) Sensor Circuit Stuck Rich (Bank 1 Sensor 1)
- DTC P2237: Oxygen (A/F) Sensor Pumping Current Circuit Open (Bank 1 Sensor 1)
- DTC P2A00: Air/Fuel Sensor Circuit Slow Response (Bank 1 Sensor 1)
RENDER: 1.0x
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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.