What does car code P2401 mean?
OBD-II Code P2401 is defined as a Evaporative Emission System Leak Detection Pump Control Circuit. The Leak Detection Pump is part of the Evaporative Emissions System. After the vehicle has been sitting for a few hours, this pump will turn on and create a vacuum in the EVAP system.
How do I fix error code P2402?
What repairs can fix the P2402 code?
- Replace the evaporative pump and fuse.
- Replace the evaporative pump relay.
- Repair the evaporative pump connector pins for corrosion, melted, or loose connections.
How does a leak detection pump work?
What is Leak Detection Pump used for? This system works by pumping pressurized air into the EVAP system to test it for leaks. The pump has a series of one-way valves and a vent valve, a sensor at the top, vacuum solenoid and a spring-loaded diaphragm. It uses an engine vacuum to move the diaphragm up and down.
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.
How do I fix code P2401?
What repairs can fix the P2401 code?
- Gas cap is tested and replaced.
- Charcoal canister replaced.
- Leaking or cracked fuel vapor lines replaced.
- Repairing or replacing the wiring harness.
- ECM replaced as needed.
- Faulty purge control solenoid replaced.
- Leak detection pump replaced.
What is the evaporative emission system vent control circuit?
The evaporative emission control (EVAP) system prevents fuel vapors from escaping into the atmosphere. The vent control valve is controlled by the engine control module (ECM) and allows air to flow into the charcoal canister to purge the gas vapors into the engine air intake to be burned.
What does a P2402 code mean?
The evaporative emission system is designed to prevent the escape of fuel vapors from the fuel system. Leaks in the system, even small ones, can allow fuel vapors to escape into the atmosphere. OBD code P2402 means Evaporative Emission System Leak Detection Pump Control Circuit High.
What is a fuel leak detection pump?
The leak detection pump is the component that often triggers those “Check Engine” warning lights when it detects small leaks that would be hard to see. It is required under federal law as it ensures your evaporative emission system (EVAP) is functioning correctly.
Where is the EVAP pressure sensor located?
The EVAP Pressure Sensor, also known as a Fuel Tank Pressure (FTP) Sensor is a device that measures air pressure or vacuum in the evaporative emission (EVAP) system. This sensor is typically found on top of or inside of the fuel tank.