LW 4000 fail code

[SplashnDashRoCo]

During the rinse cycle the arm stopped half way through. I went in to look at the control panel, and it was throwing up a code saying “Undercarriage eye fail”. What is this and how do I fix it? Thank you!

 

[Ontario Car Wash]

NOT SURE WHY IT STOPPED. BUT UNDERCARIAGE EYE AND FRONT EYE I THINK ARE SOME ERROR. U MIGHT HAVE TO CHANGE ONE OF THE EYES. WATCH AND SEE IF UNDERCARRIAGE COMES ON OR NOT. I THINK YOU GET MOTOR RUN ON ERROR WHEN IT MISSIS SOME CYCLE.