P2407 Fault Code

Evaporative Emission System Leak Detection Pump Sense Circuit Intermittent/Erratic

• What does that mean?
• Symptoms
• Causes
• Solutions

The P2407 code indicates an issue with the Evaporative Emission System Leak Detection Pump Sense Circuit. This can occur when the powertrain control module (PCM) detects intermittent or erratic signals from the leak detection pump circuit, which is responsible for detecting leaks in the evaporative emission control system.

What are the symptoms of the P2407 code?

• Check engine light is illuminated
• Possible fuel odor inside or outside the vehicle
• Increased emissions due to leaks
• Poor fuel economy due to evaporative system malfunction

What causes the P2407 code?

• Faulty leak detection pump
• Damaged wiring or connectors in the pump circuit
• Issues with the PCM
• Short or open circuits in the sense circuit
• Poor ground connection

How to fix P2407?

• Inspect and repair any damaged wiring or connectors
• Test and replace the leak detection pump if necessary
• Verify PCM functionality and update software if needed
• Ensure a good ground connection in the circuit
• Clear the code and retest the system for leaks