How can I fix my v fit los angeles 2 treadmill?

Hi there

I have a Los Angeles 2 Treadmill which has recently stopped operating. The problem is an "E1" code appears on the computer console after about 7-8 seconds from starting. I have contacted the manufacturers and they say, the fault is possibly due to the Speed Sensor wire. Is there any other reason that you can think of before I purchase a replacement wire?

Thanks