P0441 Evaporative Emission System Incorrect Purge Flow
PCM detects stuck open of evaporative emission purge solenoid valve and stuck close of evaporative emission ventilation solenoid valve by pressure change in fuel tank.
Stuck open of evaporative emission purge solenoid valve is judged through monitoring leak of evaporative emission system.
Stuck close of evaporative emission ventilation solenoid valve is judged after 20 seconds of end of monitoring leak of evaporative emission system, or of usual operation of evaporative emission purge solenoid from ON to OFF.
Check Conditions
ON duty cycle of the evaporative emission purge solenoid is 0 percent.
20 seconds have elapsed from the time the duty cycle of the evaporative emission purge solenoid has turned to 0 percent.
Judgment Criteria
The pressure in the fuel tank is −2 kPa (0.29 psi) or less for 0.1 second.
TROUBLESHOOTING HINTS (The most likely causes for this code to be set are:)
- Evaporative emission purge solenoid failed.
- Evaporative emission ventilation solenoid failed.
- Choking up of hose between evaporative emission canister and evaporative emission ventilation solenoid.
PCM detects stuck open of evaporative emission purge solenoid valve and stuck close of evaporative emission ventilation solenoid valve by pressure change in fuel tank.
Stuck open of evaporative emission purge solenoid valve is judged through monitoring leak of evaporative emission system.
Stuck close of evaporative emission ventilation solenoid valve is judged after 20 seconds of end of monitoring leak of evaporative emission system, or of usual operation of evaporative emission purge solenoid from ON to OFF.
Check Conditions
ON duty cycle of the evaporative emission purge solenoid is 0 percent.
20 seconds have elapsed from the time the duty cycle of the evaporative emission purge solenoid has turned to 0 percent.
Judgment Criteria
The pressure in the fuel tank is −2 kPa (0.29 psi) or less for 0.1 second.
TROUBLESHOOTING HINTS (The most likely causes for this code to be set are:)
- Evaporative emission purge solenoid failed.
- Evaporative emission ventilation solenoid failed.
- Choking up of hose between evaporative emission canister and evaporative emission ventilation solenoid.