P00440 EVAP Emission Control System Purge Control Valve Circuit
Explanation
The EVAP (Evaporative Emission Control) system prevents fuel vapors from escaping into the atmosphere. The EVAP system consists of several components, including the EVAP purge control valve. The EVAP purge control valve opens and closes to allow fuel vapors to flow into the engine to be burned, rather than escaping into the atmosphere.
If the EVAP purge control valve circuit fails, the EVAP system will not be able to function properly and fuel vapors may escape into the atmosphere. This can cause a number of problems, including:
* Increased emissions
* Poor fuel economy
* Engine performance problems
Symptoms
The following are some of the symptoms that may accompany the P0440 code:
* Check Engine Light is illuminated
* Engine misfires
* Rough idling
* Stalling
* Poor fuel economy
* Increased emissions
Diagnosis
A qualified technician will use a scan tool to diagnose the P0440 code. The scan tool will be used to access the vehicle's computer and retrieve data about the EVAP system. The technician will then use this data to identify the source of the problem.
Repair
The repair for a P0440 code will vary depending on the cause of the problem. In some cases, the EVAP purge control valve may simply need to be cleaned or replaced. In other cases, the EVAP system may need to be repaired or replaced.
Cost
The cost of repairing a P0440 code will vary depending on the severity of the problem and the type of repair that needs to be performed. In most cases, the cost will be between $100 and $300.
