I have this 2007 Lincoln MKX with a VIN of: 2LMDU88C57BJ35633 and 96,000 miles on it. The issue is that intermittently it will have a high idle if 1400rpm. It also has a DTC of P115E that I cannot erase. Both Mitchell and Identifix do not provide any info on this code. Has anyone seen this before? If so, where do I go for a diagnosis and service information?