The evaporative emission (EVAP) control system utilizes a purge flow to reduce hydrocarbon emissions in vehicles. This occurs during non-closed throttle conditions, where the EVAP canister purge volume control solenoid valve is opened to allow for the necessary flow of air. The amount of air that enters the system is directly related to intake manifold vacuum; this is how normal purge conditions are determined and maintained.
In order to ensure optimal performance, an EVAP control system pressure sensor must be exposed to these incoming amounts of air from the intake manifold vacuum at all times. This helps regulate the overall function of the EVAP and keep emissions low, thus protecting both occupants and Mother Nature alike.
What are the Possible Causes of the Code P1447?
This article will discuss the most common causes of an EVAP canister purge volume control solenoid valve stuck closed. These include:
- Loose, disconnected or improper connection of rubber tube
- Blocked rubber tube
- Cracked EVAP canister
- EVAP canister purge volume control solenoid valve circuit Closed throttle position switch
- Blocked purge port
- Closed throttle position switch
In order to diagnose and repair an issue with the EVAP system, a technician should first inspect these components for any loose connections or blockages that may be causing the problem. The technician should also check whether there is a cracked EVAP canister that could be preventing the proper flow of fuel vapors from entering the engine’s intake manifold during the purging process, as well as if any circuits are open or closed which could cause improper operation of the system’s valves and sensors.
What is the Cost to Diagnose the Code P1447?
The cost to diagnose the P1447 code is 1.0 hour of labor, although auto repair shops may charge between $75 and $150 per hour for such services. This rate varies depending on location, vehicle’s make and model, as well as engine type. As a result, it is important to contact your local auto repair shop for an accurate estimate of their diagnosis time and labor rates before proceeding with any repairs or diagnostics.
See also: P0603 Code 7.3 Powerstroke
How to Fix the P1447 Code?
Checking the possible causes listed is an important first step for troubleshooting. Then, visually inspect all related wiring harnesses and connectors for any damage or abnormalities. Make sure to look closely at each of the components and connectors – broken, bent, pushed out, or corroded pins should not be overlooked in this process.