P2407 is a diagnostic trouble code (DTC) for “Evap Leak Detection Pump Sense Circuit Intermittent/Erratic“. This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation.
How does leak detection pump work?
It pumps air into the EVAP system to develop a pressure of about 7.5′ H20(1/4) psi. A reed switch in the LDP allows the PCM to monitor the position of the LDP diaphragm. The PCM uses the reed switch input to monitor how fast the LDP is pumping air into the EVAP system. This allows detection of leaks and blockage.
What does code P043E mean?
OBD-II Code P043E is defined as a Evaporative Emission System Leak Detection Reference Orifice. The Leak Detection Pump contains a reference orifice tube. This tube restricts airflow to create a difference of pressure in the EVAP system.
How do I know if my leak detection pump is bad?
If the Check Engine Light has lit up and thrown a trouble code, a diagnostic check with a code scanner can pinpoint the general cause of the problem. If the cause is a bad evaporative leak detection pump, the bad one can be removed from your car, and then replaced with a new evaporative leak detection pump.
How do you test a Dodge leak detection pump?
Hold the LDP in the same orientation as it would be mounted in the vehicle. Blow through the canister side port, filling the balloon, and release pressure slowly.
How do I fix P043E code?
How To Correct P043E Evaporative Emission System Leak Detection Reference Orifice Low Flow
- Replace the defective EVAP pressure sensor.
- If there are some faults in the vent control or purge control solenoid, then it should be repaired or replaced.
- The vacuum pump module should be replaced.
Where is the EVAP pressure sensor located?
The fuel tank pressure sensor is part of the fuel pump assembly and is mounted on top of the tank or inside the tank. It’s part of the evaporative emissions system (commonly referred to as “EVAP”) and reads pressure in the fuel system to detect evaporative leaks, such as a loose or faulty gas cap.
What causes incorrect purge flow?
The main cause is a faulty purge valve. Other common causes include a disconnected or clogged purge line, circuit issues like loose connections or damaged wires, or problems with the control module. Other problems with the EVAP system could also cause issues with the purge flow.
What happens if you don’t fix an EVAP leak?
Fuel vapors are emitted from vehicles any time there is gasoline in the tank. So if you have a leak, even if you are not driving the vehicle, those vapors are polluting the air 24 hours a day. Uncontrolled emissions like this account for about 20 percent of the pollution produced by vehicles.
How do I know if I have an EVAP leak?
Potential EVAP Leak Causes
You can find out for sure by running diagnostics on your vehicle. By either stopping in at your local mechanic or auto parts store or hooking up your personal diagnostic device, you can find out what code is causing the check engine light to come on.