usually this means the gas cap is not on tight or is leaking
Evaporative emission system purge control valve circuit
AnswerP0442 evaporative emissions control system leak detected see "What are OBDII codes and their meanings?"you can also go to www.obd-codes.com for a list of several codes on different models hope this helps- steph
To fix a 2007 Suburban OBDII code related to the evaporative emissions control vent solenoid, first inspect the solenoid for any visible damage or disconnections. If it's defective, replace it with a new unit. Additionally, check the associated wiring and connectors for corrosion or breaks. After making repairs, clear the code with an OBDII scanner and monitor for any reoccurrence.
Evaporative Emission System High Purge Flow. Relates to your vehicles OBDII compliant system for monitoring vehicle emissions.
P0449 Evaporative Emission Control System Vent Valve/Solenoid Circuit Malfunction
OBDII code P0449 indicates a problem with the evaporative emissions control (EVAP) vent circuit, specifically that the circuit is reading low voltage or an open circuit. This can be caused by issues such as a faulty vent valve, damaged wiring, or poor connections in the EVAP system. The code typically triggers a check engine light and may lead to increased emissions. Addressing this issue often involves inspecting the vent valve and related components for faults or damage.
P0440 OBDII code is for evaporative emissions control system failure.. check your gas cap though, many times a loose gas cap is the culprit with this code, hope this helps some1 out.
I t means you have something wrong with your emissions. Check the hose that goes from the Evap Valve (usually a round plastic valve) to Throttle body. Maybe is too soft and when there is a vacuum it clogges.
Large evaporative emissions vapor leak. Check gas cap and all hoses from the engine to the gas tank.
The OBD-II code P0440 on a Toyota Avalon indicates a problem with the evaporative emissions control system (EVAP). This code typically signifies that the system is not functioning correctly, which could be due to issues such as a faulty gas cap, leaks in the EVAP system, or problems with the purge or vent valves. It's important to diagnose the specific cause, as it can affect the vehicle's emissions and performance. A mechanic can perform tests to identify and fix the underlying issue.
Check every rubber hose from the engine to the fuel tank.
OBDII code P1459 in a Ford Escape indicates a problem with the evaporative emission control system, specifically related to the fuel tank pressure sensor or its circuit. This code typically suggests that the fuel tank pressure is outside the expected range, which can be caused by a faulty sensor, wiring issues, or a leak in the EVAP system. It's important to diagnose the exact cause to prevent potential fuel vapor leaks and ensure the proper functioning of the vehicle's emissions system.