P0455 scanguage code - loose gas cap

[smartokie]

Installed a new stainless gas filler door. CEL came on later that week and the scanguage read P0455 which is gross emission leak. Discovered I had left the gas cap very loose which fixed the problem when tightened . Erased the code and dash CEL easily with the scan guage and saved a 200 mile round trip to the Dallas Smart dealership and 7 hours of my time. The scanguage paid for itself today

[JPaul]

This is good news, thanks.

[LDGsmart]

reading the specs for the 2009 Smart, it looks like this code will be moved to an idiot light. As it should be.