Engine code (P1448) Evap system Help

I have a 98 discovery V8 241, 4.0L with 102,000 miles in great condition. Runs great, no problems except the check engine light came on, so I pulled the code and it was ( P1448 Evap system purge valve flow 2 fault ) I reset the engine light and it stayed off for 2 weeks. Then today it came on, so I pulled codes again and it read the same code again. Does anybody have any ideas of what to try or were to start?
thanks for any help you can give

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98 Discovery II LE

Most common is purge valve.