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.
2006 Toyota Matrix XRSFACTORY OEM SERVICE PROCEDURE
Typical Enabling Conditions
TYPICAL ENABLING CONDITIONS
| The monitor will run whenever these DTCs are not present | None |
| EVAP key-off monitor runs when all of the following conditions met: | - |
| Atmospheric pressure | 70 to 110 kPa (525 to 825 mmHg) [absolute pressure] |
| Battery voltage | 10.5 V or higher |
| Vehicle speed | 2.5 mph (4 km/h) or less |
| Ignition switch | OFF |
| Time after key off | 5 hours |
| ECT | 4.4 to 35°C (40 to 95°F) |
| IAT | 4.4 to 35°C (40 to 95°F) |
| EVAP pressure sensor malfunction (P0450, P0452, P0453) | Not detected |
| EVAP canister purge valve | Not operated by scan tool |
| EVAP canister vent valve | Not operated by scan tool |
| EVAP leak detection pump | Not operated by scan tool |
| Both of the following conditions 1 and 2 set before key off | - |
| 1. Duration that vehicle has been driven | 5 minutes or more |
| 2. EVAP purge operation | Performed |
EVAP Key-off monitor sequence
- Atmospheric pressure measurement ATMOSPHERIC PRESSURE MEASUREMENT CONDITIONS
Next sequence is run if the following condition(s) set - Atmospheric pressure change for 10 seconds Within 0.3 kPa (2.25 mmHg) in 1 second - Reference pressure measurement REFERENCE PRESSURE MEASUREMENT CONDITIONS
Next sequence is run if the following condition(s) set - EVAP pressure just after reference pressure measurement start -1 kPa (-7.5 mmHg) or lower Reference pressure -4.3 to -1.2 kPa (-32.25 to -9 mmHg) Reference pressure Saturated within 60 seconds - EVAP canister vent valve close stuck check EVAP CANISTER VENT VALVE CLOSE STUCK CHECK CONDITIONS
Next sequence is run if the following condition(s) set - EVAP pressure change after vent valve is ON 0.3 kPa (2.25 mmHg) or more - Vacuum introduction and EVAP leak check VACUUM INTRODUCTION AND EVAP LEAK CHECK CONDITIONS
Next sequence is run if the following condition(s) set - Next sequence is run if the following condition(s) set Saturated within 12 minutes - EVAP canister purge valve close stuck check EVAP CANISTER PURGE VALVE CLOSE STUCK CHECK CONDITION
Next sequence is run if the following condition(s) set - EVAP pressure change after purge valve is open 0.3 kPa (2.25 mmHg) or more - Atmospheric pressure measurement ATMOSPHERIC PRESSURE MEASUREMENT CONDITION
EVAP monitor is complete if the following condition set - Atmospheric pressure difference between sequence 1 and 6 Within 0.3 kPa (2.25 mmHg)
TYPICAL ENABLING CONDITIONS
| The monitor will run whenever these DTCs are not present | P0011, P0012 (VVT system-Advance, Retard), P0100, P0102, P0103 (MAF sensor), P0110, P0112, P0113 (IAT sensor), P0115, P0117, P0118 (ECT sensor), P0120, P0122, P0123 (TP sensor), P0125 (Insufficient ECT for closed loop), P0171, P0172 (Fuel system), P0300, P0301, P0302, P0303, P0304 (Misfire), P0335 (CKP sensor), P0340, P0341 (CMP sensor), P0351, P0352, P0353, P0354 (Igniter), P0450, P0451, P0452, P0453 (EVAP pressure sensor), P0500 (VSS) |
| EVAP key-off monitor runs when all of the following conditions met: | - |
| Atmospheric pressure | 70 to 110 kPa (525 to 825 mmHg) [absolute pressure] |
| Battery voltage | 10.5 V or higher |
| Vehicle speed | 2.5 mph (4 km/h) or less |
| Ignition switch | OFF |
| Time after key off | 5 hours |
| ECT | 4.4 to 35°C (40 to 95°F) |
| IAT | 4.4 to 35°C (40 to 95°F) |
| EVAP pressure sensor malfunction (P0450, P0452, P0453) | Not detected |
| EVAP canister purge valve | Not operated by scan tool |
| EVAP canister vent valve | Not operated by scan tool |
| EVAP leak detection pump | Not operated by scan tool |
| Both of the following conditions 1 and 2 set before key-off | - |
| 1. Duration that vehicle has been driven | 5 minutes or more |
| 2. EVAP purge operation | Performed |
EVAP Key-off monitor sequence
- Atmospheric pressure measurement ATMOSPHERIC PRESSURE MEASUREMENT CONDITIONS
Next sequence is run if the following condition(s) set - Atmospheric pressure change for 10 seconds Within 0.3 kPa (2.25 mmHg) in 1 second - Reference pressure measurement REFERENCE PRESSURE MEASUREMENT CONDITIONS
Next sequence is run if the following condition(s) set - EVAP pressure just after reference pressure measurement start -1 kPa (-7.5 mmHg) or lower Reference pressure -4.3 to -1.2 kPa (-32.25 to -9 mmHg) Reference pressure Saturated within 60 seconds - EVAP canister vent valve close stuck check EVAP CANISTER VENT VALVE CLOSE STUCK CHECK CONDITIONS
Next sequence is run if the following condition(s) set - EVAP pressure change after vent valve is ON 0.3 kPa (2.25 mmHg) or more - Vacuum introduction and EVAP leak check VACUUM INTRODUCTION AND EVAP LEAK CHECK CONDITIONS
Next sequence is run if the following condition(s) set - EVAP pressure Saturated within 12 minutes - EVAP canister purge valve close stuck check EVAP CANISTER PURGE VALVE CLOSE STUCK CHECK CONDITIONS
Next sequence is run if the following condition(s) set - EVAP pressure change after purge valve is open 0.3 kPa (2.25 mmHg) or more - Atmospheric pressure measurement ATMOSPHERIC PRESSURE MEASUREMENT CONDITIONS
EVAP monitor is complete if the following condition set - Atmospheric pressure difference between sequence 1 and 6 Within 0.3 kPa (2.25 mmHg)
TYPICAL ENABLING CONDITIONS
| Monitor runs whenever these DTCs not present | P0011, P0012 (VVT system-Advance, Retard), P0100, P0102, P0103 (MAF sensor), P0110, P0112, P0113 (IAT sensor), P0115, P0117, P0118 (ECT sensor), P0120, P0122, P0123 (TP sensor), P0125 (Insufficient ECT for closed loop), P0171, P0172 (Fuel system), P0300, P0301, P0302, P0303, P0304 (Misfire), P0335 (CKP sensor), P0340, P0341 (CMP sensor), P0351, P0352, P0353, P0354 (Igniter), P0450, P0451, P0452, P0453 (EVAP pressure sensor), P0500 (VSS) |
| Engine | Running |
| Engine coolant temperature | 4.4°C (40°F) or more |
| Intake air temperature | 4.4°C (40°F) or more |
| EVAP pressure sensor malfunction | Not detected |
| EVAP canister purge valve | Not operated by scan tool |
| EVAP system check | Not operated by scan tool |
| Battery voltage | 10 V or more |
| Purge duty cycle | 8 % or more |
P0451 (Noise monitor):
TYPICAL ENABLING CONDITIONS - P0451 (NOISE MONITOR)
| Monitor runs whenever the following DTCs are not present | None |
| Atmospheric pressure (absolute pressure) | 70 kPa (525 mmHg) to 110 kPa (825 mmHg) |
| Battery voltage | 10.5 V or more |
| Either of the following conditions met: | Condition A or B |
| A. Engine condition | Running |
| B. Time after key off | 5 hours |
| Intake air temperature | 4.4° to 35°C (40° to 95°F) |
| EVAP pressure sensor malfunction (P0450, P0452, P0453) | Not detected |
P0451 (Stuck monitor):
TYPICAL ENABLING CONDITIONS - P0451 (STUCK MONITOR)
| Monitor runs whenever the following DTCs are not present | None |
| Atmospheric pressure (absolute pressure) | Less than 70 kPa (525 mmHg), or 110 kPa (825 mmHg) or more |
| Battery voltage | 10.5 V or more |
| EVAP pressure sensor malfunction (P0450, P0452, P0453) | Not detected |
| Time after key off | 5 hours |
| Intake air temperature | 4.4° to 35°C (40° to 95°F) |
P0450, P0452 and P0453:
TYPICAL ENABLING CONDITIONS - P0450, P0452 AND P0453
| Monitor runs whenever these DTCs are not present | None |
TYPICAL ENABLING CONDITIONS
| The monitor will run whenever these DTCs are not present | None |
| EVAP key-off monitor runs when all of the following conditions met: | - |
| Atmospheric pressure | 70 to 110 kPa (525 to 825 mmHg) [absolute pressure] |
| Battery voltage | 10.5 V or higher |
| Vehicle speed | 2.5 mph (4 km/h) or less |
| Ignition switch | OFF |
| Time after key off | 5 hours |
| ECT | 4.4 to 35°C (40 to 95°F) |
| IAT | 4.4 to 35°C (40 to 95°F) |
| EVAP pressure sensor malfunction (P0450, P0452, P0453) | Not detected |
| EVAP canister purge valve | Not operated by scan tool |
| EVAP canister vent valve | Not operated by scan tool |
| EVAP leak detection pump | Not operated by scan tool |
| Both of the following conditions 1 and 2 set before key off | - |
| 1. Duration that vehicle has been driven | 5 minutes or more |
| 2. EVAP purge operation | Performed |
EVAP Key-off monitor sequence
- Atmospheric pressure measurement ATMOSPHERIC PRESSURE MEASUREMENT CONDITIONS
Next sequence is run if the following condition(s) set - Atmospheric pressure change for 10 seconds Within 0.3 kPa (2.25 mmHg) in 1 second - Reference pressure measurement REFERENCE PRESSURE MEASUREMENT CONDITIONS
Next sequence is run if the following condition(s) set - EVAP pressure just after reference pressure measurement start -1 kPa (-7.5 mmHg) or lower Reference pressure -4.3 to -1.2 kPa (-32.25 to -9 mmHg) Reference pressure Saturated within 60 seconds - EVAP canister vent valve close stuck check EVAP CANISTER VENT VALVE CLOSE STUCK CHECK CONDITIONS
Next sequence is run if the following condition(s) set - EVAP pressure change after vent valve is ON 0.3 kPa (2.25 mmHg) or more - Vacuum introduction and EVAP leak check VACUUM INTRODUCTION AND EVAP LEAK CHECK CONDITIONS
Next sequence is run if the following condition(s) set - EVAP pressure Saturated within 12 minutes - EVAP canister purge valve close stuck check EVAP CANISTER PURGE VALVE CLOSE STUCK CHECK CONDITIONS
Next sequence is run if the following condition(s) set - EVAP pressure change after purge valve is open 0.3 kPa (2.25 mmHg) or more - Atmospheric pressure measurement ATMOSPHERIC PRESSURE MEASUREMENT CONDITIONS
EVAP monitor is complete if the following condition set - Atmospheric pressure difference between sequence 1 and 6 Within 0.3 kPa (2.25 mmHg)
TYPICAL ENABLING CONDITIONS
| The monitor will run whenever these DTCs are not present | None |
| EVAP key-off monitor runs when all of the following conditions met: | - |
| Atmospheric pressure | 70 to 110 kPa (525 to 825 mmHg) [absolute pressure] |
| Battery voltage | 10.5 V or higher |
| Vehicle speed | 2.5 mph (4 km/h) or less |
| Ignition switch | OFF |
| Time after key off | 5 hours |
| ECT | 4.4 to 35°C (40 to 95°F) |
| IAT | 4.4 to 35°C (40 to 95°F) |
| EVAP pressure sensor malfunction (P0450, P0452, P0453) | Not detected |
| EVAP canister purge valve | Not operated by scan tool |
| EVAP canister vent valve | Not operated by scan tool |
| EVAP leak detection pump | Not operated by scan tool |
| Both of the following conditions 1 and 2 set before key off | - |
| 1. Duration that vehicle has been driven | 5 minutes or more |
| 2. EVAP purge operation | Performed |
EVAP Key-off monitor sequence
- Atmospheric pressure measurement ATMOSPHERIC PRESSURE MEASUREMENT ENABLING CONDITIONS
Next sequence is run if the following condition(s) set - Atmospheric pressure change for 10 seconds Within 0.3 kPa (2.25 mmHg) in 1 second - Reference pressure measurement REFERENCE PRESSURE MEASUREMENT ENABLING CONDITIONS
Next sequence is run if the following condition(s) set - EVAP pressure just after reference pressure measurement start -1 kPa (-7.5 mmHg) or lower Reference pressure -4.3 to -1.2 kPa (-32.25 to -9 mmHg) Reference pressure Saturated within 60 seconds - EVAP canister vent valve close stuck check EVAP CANISTER VENT VALVE CLOSE STUCK CHECK CONDITIONS
Next sequence is run if the following condition(s) set - EVAP pressure change after vent valve is ON 0.3 kPa (2.25 mmHg) or more - Vacuum introduction and EVAP leak check VACUUM INTRODUCTION AND EVAP LEAK CHECK CONDITIONS
Next sequence is run if the following condition(s) set - EVAP pressure Saturated within 12 minutes - EVAP canister purge valve close stuck check EVAP CANISTER PURGE VALVE CLOSE STUCK CHECK CONDITIONS
Next sequence is run if the following condition(s) set - EVAP pressure change after purge valve is open 0.3 kPa (2.25 mmHg) or more - Atmospheric pressure measurement ATMOSPHERIC PRESSURE MEASUREMENT CONDITIONS
EVAP monitor is complete if the following condition set - Atmospheric pressure difference between sequence 1 and 6 Within 0.3 kPa (2.25 mmHg)
TYPICAL ENABLING CONDITIONS
| The monitor will run whenever these DTCs are not present | None |
| EVAP key-off monitor runs when all of the following conditions met: | - |
| Atmospheric pressure | 70 to 110 kPa (525 to 825 mmHg) [absolute pressure] |
| Battery voltage | 10.5 V or higher |
| Vehicle speed | 2.5 mph (4 km/h) or less |
| Ignition switch | OFF |
| Time after key off | 5 hours |
| ECT | 4.4 to 35°C (40 to 95°F) |
| IAT | 4.4 to 35°C (40 to 95°F) |
| EVAP pressure sensor malfunction (P0450, P0452, P0453) | Not detected |
| EVAP canister purge valve | Not operated by scan tool |
| EVAP canister vent valve | Not operated by scan tool |
| EVAP leak detection pump | Not operated by scan tool |
| Both of the following conditions 1 and 2 set before key off | - |
| 1. Duration that vehicle has been driven | 5 minutes or more |
| 2. EVAP purge operation | Performed |
EVAP Key-off monitor sequence
- Atmospheric pressure measurement ATMOSPHERIC PRESSURE MEASUREMENT CONDITIONS
Next sequence is run if the following condition(s) set - Atmospheric pressure change for 10 seconds Within 0.3 kPa (2.25 mmHg) in 1 second - Reference pressure measurement REFERENCE PRESSURE MEASUREMENT CONDITIONS
Next sequence is run if the following condition(s) set - EVAP pressure just after reference pressure measurement start -1 kPa (-7.5 mmHg) or lower Reference pressure -4.3 to -1.2 kPa (-32.25 to -9 mmHg) Reference pressure Saturated within 60 seconds - EVAP canister vent valve close stuck check EVAP CANISTER VENT VALVE CLOSE STUCK CHECK CONDITIONS
Next sequence is run if the following condition(s) set - EVAP pressure change after vent valve is ON 0.3 kPa (2.25 mmHg) or more - Vacuum introduction and EVAP leak check VACUUM INTRODUCTION AND EVAP LEAK CHECK CONDITIONS
Next sequence is run if the following condition(s) set - EVAP pressure Saturated within 12 minutes - EVAP canister purge valve close stuck check EVAP CANISTER PURGE VALVE CLOSE STUCK CHECK CONDITIONS
Next sequence is run if the following condition(s) set - EVAP pressure change after purge valve is open 0.3 kPa (2.25 mmHg) or more - Atmospheric pressure measurement ATMOSPHERIC PRESSURE MEASUREMENT CONDITIONS
EVAP monitor is complete if the following condition set - Atmospheric pressure difference between sequence 1 and 6 Within 0.3 kPa (2.25 mmHg)
All:
TYPICAL ENABLING CONDITIONS (ALL)
| The monitor will run whenever the following DTCs are not present | None |
Case 1:
TYPICAL ENABLING CONDITIONS (CASE 1)
| Engine | Running |
| Battery voltage | 8 V or more |
| Ignition switch | ON |
| Starter | OFF |
Case 2:
TYPICAL ENABLING CONDITIONS (CASE 2)
| Soak time | 20 to 300 minutes or more |
| Battery voltage | 8 V or more |
| Ignition switch | ON |
| Starter | OFF |
Case 3:
TYPICAL ENABLING CONDITIONS (CASE 3)
| Soak time | 310 minutes or more |
| Battery voltage | 8 V or more |
| Ignition switch | ON |
| Starter | OFF |
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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