I've got the 1653 only had the odd high reading on continuity, but find squeezing the crock clips sorts that out.
Otherwise found it a fine bit of kit over the past 3-4 years
>2000 ohms ...... make sure the fuse is sat right in the lead, tighten the thread right up.
error5 ............. from memory is excessive noise on the circuit under test, retest or use the scroll button to view test result