P0442 Evaporative Emission System Leak Detected in 1998 Mercedes ML320

Model: 1998 ML320 Fault Code: P0442 Posted: 2006-08-26 16:22

My mechanic cleared the P0442 fault code once, but it returned within a week. I now use my own OBD-II scanner connected to my computer and have manually cleared the code. The vehicle has 77,000 miles and runs smoothly under normal conditions. Any insights into potential causes or troubleshooting steps for this evaporation emission system leak? Thanks, Dave