[Shotimes] code 634 - MLP sensor

[van Oss]

I'm getting code 634 (MLP sensor voltage out of expected range) on a SLO 
with column shifter.  The column shifter feels mushy and does not neatly 
click into place like it used to.

Is this more likely to be a mechanical problem with the shift cable that I 
might be able to correct by adjusting the cable?  Is there any wear item or 
adjustment possible in the column shifter itself?

Or am I really looking at a bad MLP?  How to test this?

TIA
VO