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P0455 OBD2 Code on 2001 Dodge Intrepid 2.7L - Check Engine Light Reappears After Gas Cap Replacement

Model: dodge intrepid Fault Code: P0455 Posted: 2006-12-14 14:00

Hi, I own a 2001 Dodge Intrepid with a 2.7L engine and am currently experiencing a check engine light that triggers the P0455 diagnostic code. I've already replaced the gas cap and reset the system, but the warning light returns within a few days. I've also inspected all vacuum lines and found no visible leaks. The issue persists despite these efforts. Can anyone provide insight into possible causes or troubleshooting steps for this recurring P0455 error on my 2001 Dodge Intrepid?

Related fault codes
P0455
Comments (1)
Anonymous 2006-12-14 14:36

The problem might be a hidden leak that wasn't detected during visual inspection, or the LDP (Lateral Ducted Pump) vent valve may not be maintaining proper vacuum pressure. These components are common sources of P0455 faults in older Dodge Intrepid models.