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Juan Crespo
Juan Crespo, Tech Trainer
Category: Car
Satisfied Customers: 1497
Experience:  A.S.E. Master Technician, Advanced Level, Emissions - Asian, Domestic, & European
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2004 Hyundai Accent code P2418 replaced Purge Control

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2004 Hyundai Accent code P2418 replaced Purge Control Solenoid, ck lines. clear out code, still comes back. Have the Evap. Emission Leak Detection Pump out, anyway to ck it? Anything else with it?

Hi there.

P2418 sets when the onboard computer (PCM) detects that the Diagnostic Module Tank Leakage (DM-TL) change over valve control circuit is open or disconnected. In other words, this code is not about an EVAP leak in it of itself, but about a malfunction of the module used to detect those leaks.

This issue is mostly caused by either a bad DM-TL or an open circuit. I've attached a pic showing the DM-TL location under the rear floor panel; also attached is a procedure to test the harness using a regular volt-ohm meter.

Please let me know if that helps solve your issue.

Best Regards.

Customer: replied 11 days ago.
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Customer: replied 8 days ago.
Sorry for be so late. is there any way to ck out the DM_TL?

The DM-TL is serviced as an assembly. The only checks released by Hyundai are an actuator test, which is done with the scan tool to verify the module is working; and the harness tests that I've uploaded for you.

Customer: replied 7 days ago.
Juan nothing is working, always going back to same code P2418

I don't quite understand what you mean; if you performed the harness tests and found the harness and connectors to be good, then that would indicate the DM-TL assembly is bad and needs to be replaced. Have you done that?

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