Lift will drive but attachment will not move.

Code 217: ACCESS 2 detects low current on power bridge.

Step 1 asks me to check line contactor (L) tip. (It is in good condition)

Step 2 asks me to check B+ cable and connections between line contactor (L), FU2 and ACCESS 2.

After careful examination and inspection everything looks good.

It states that if cable condition and connections are correct then replace ACCESS 2.

Note: Wrench will only show once seat switch is activated..

Could this be caused by a faulty battery causing the lift to throw the code? If the ACCESS actually needs to be replaced I can make it happen but I feel something else is causing a problem that I'm missing.