I just purchased a 2003 Disco II 87,000 miles for my 16yr old son. I have records of upkeep (bot from my brother). Two days after my brother delivered ,the Service Engine Soon lite came on but Disco is running fine. Took it to the local AutoZone for an error report and the OBDI reader displays P1414? Talked to my brother and he had the Disco serviced with oil, filter, and checkup before he drove it too me. He told me up front the windshield wiper was not working, his son had to toggle the switch and it would eventually work but that stopped about a week ago. Any clues on the P1414 error troubleshoot before I take it to Land Rover dealership or Indi?