Make sure the mirror is getting power and is properly grounded. Proper power. The sensor feeds data to a control module, so any issues with the sensor should show up as soft codes in the computer. These won't cause the CEL to be illuminated and require more than the most basic of scanners to check. You should still be able to get those codes scanned for free at many shops and parts stores. Most likely these will be B, C, or U codes.
Sunday, February 12th, 2012 AT 8:37 PM