Hi, I have a Rang Rover 2007 Vogue with the midrange speakers on both rear doors not working. It's odd that they both don't. One I can imagine a loose thread but both. With the GAP tool the error code becomes: B1A02-13 (2F) Speaker 2 circuit - General electrical failure - circuit open :B1A01-13 (2F) Speaker 1 circuit - General electrical failure - circuit open. anyone have an idea how i can fix it?