This code comes up when the engine has idled for too long as well when the fault shows drive the forklift like normal & it will go away. If you have a machine that allows you to check fault logs you will see it regularly. 660 logs on a machine with 2457 hrs. Nothing at all to worry about unless it is showing up in normal operation.

the description of your code is in the post just above this one.
start with clearing the code and seeing how quick it returns, then making sure your air filter is new, and has not been blown out too many times, then do a good tune up.

522655-1 code. What does that mean and how to I repair it?

522655-0 short term closed loop correction bank 1 less than nor.-40% ritch e.op. 522655-1 short term c.l.c bank greater than nor+40% lean e op