P240A Fault Code

Evaporative Emission System Leak Detection Pump Heater Control Circuit/Open

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

The P240A fault code indicates an issue with the Evaporative Emission System Leak Detection Pump Heater Control Circuit/Open. This code points to a malfunction within the heater circuit of the leak detection pump, which is essential for checking the integrity of the evaporative emissions system. A properly functioning system prevents fuel vapors from leaking into the atmosphere, thereby minimizing environmental impact.

What are the symptoms of the P240A code?

Symptoms associated with the P240A code may include:

• Triggering of the Check Engine Light (CEL).
• Issues with emissions testing due to the system’s inability to perform leak checks.
• Decreased fuel efficiency due to improper fuel vapor management.
• Possible rough idling or stalling if related components are affected.

What causes the P240A code?

This fault can occur due to several reasons, including:

• A blown fuse in the heater circuit.
• Damaged wiring or connectors leading to the vapor leak detection pump.
• A faulty leak detection pump itself, preventing it from heating effectively.
• Poor electrical connections or corrosion within the circuit.

How to fix P240A?

To resolve the P240A code, the following steps may be necessary:

• Inspect the associated fuses and replace any that are blown.
• Check the wiring for any signs of damage or corrosion, repairing or replacing as needed.
• Test the leak detection pump to confirm it is functioning and, if defective, replace it.
• Ensure all electrical connections are clean and securely attached.
• After repairs, clear the fault codes and perform a system test to verify the issue is resolved.