Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means that the car's computer is having trouble getting a steady signal from a part that checks for leaks in the system that keeps gas fumes from escaping. It's like a game of telephone where the message keeps getting mixed up.
The vehicle's EVAP system is designed to capture and recycle fuel vapors from the fuel tank. The leak detection pump is a part of this system, and it checks for leaks by pressurizing the system and monitoring the pressure. If the signal from the pump is inconsistent, this code is triggered.
The P2407 code indicates that the Engine Control Module (ECM) has detected an intermittent or erratic signal from the EVAP system's leak detection pump sense circuit. This could be due to wiring issues, a faulty pump, or a malfunctioning sensor.
• Check Engine Light is on
• Possible fuel odor
• Potential decrease in fuel efficiency
• Faulty leak detection pump
• Damaged or corroded wiring or connectors
• Malfunctioning sensor in the EVAP system
EVAP: Evaporative Emission Control System
ECM: Engine Control Module
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connectors related to the leak detection pump.
• Test the leak detection pump for proper operation.
• Repair or replace damaged wiring or connectors.
• Replace the leak detection pump if faulty.
• Clear the code and test drive the vehicle to ensure the issue is resolved.
• OBD-II scanner
• Multimeter
• Basic hand tools
$100 - $400
Moderate
• Toyota Camry
• Ford Focus
• Honda Accord
• Regularly inspect the EVAP system for damage.
• Ensure all fuel caps and seals are properly tightened.
• Perform routine maintenance checks.
Sensor Issue
• Do not ignore the Check Engine Light.
• Have the vehicle inspected by a professional mechanic.
• Avoid overfilling the fuel tank.
Check with your vehicle manufacturer as EVAP system components may be covered under warranty.
This code has been more common in vehicles with higher mileage, as wear and tear can affect the EVAP system components.
Moderate – It should be addressed soon to prevent potential fuel vapor leaks and emissions failures.
Driving with a malfunctioning EVAP system can lead to increased emissions and may fail emissions testing.
• Vehicle must be in a safe location with the engine off.
• Ensure the fuel tank is not overfilled.
The leak detection pump is typically located near the fuel tank or within the EVAP system components under the vehicle.
Q: Can I drive with a P2407 code?
A: While the vehicle can still be driven, it's best to address the issue soon to avoid emissions problems.
Q: Will a P2407 code affect my car's performance?
A: It may not directly affect performance, but it can lead to increased emissions and potential fuel odor.
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Universal · Digital multimeter
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Useful when diagnosis points toward damaged wiring, corroded terminals, or connector repairs.
Useful if diagnosis points toward damaged connectors, wiring, or terminal repairs.
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Fitment Required · Vehicle-fitment part
Relevant when EVAP diagnosis points toward purge-flow or purge-control faults.
EVAP diagnosis often includes purge-flow and valve-control faults.
Confirm the failed valve and exact fitment before buying parts.
View options on AmazonThese parts may be related to this fault category, but a code by itself does not confirm exact fitment or guarantee that replacing a part will solve the problem.