2005 4R w/V8 LTD - Couple of weeks ago Check Engine, VSC TRAC & VSSC OFF lights came on. Scanned and DTC P2401 ( Evaporative emission leak detection pump stuck off ) came up. I erased code and DTC came back today ( after several drive cycles. Lights were off during this period perhaps pump came unstuck ? ). Can vehicle be driven with this code still active without it going into the dreaded Limp Mode ? Any insights are welcome.