Negative resistance value on a DMM

QMy DT4253 displays "-40 ohm" in resistance measurement. Why does this happen?


The DT4253 normally does not display the resistance as a negative value.
Please confirm the following.

  • There is no electric potential on the measured points
  • The test leads can be shorted in the continuity function

If these two points can be confirmed and the resistance is still displayed as a negative value, the DT4253 may be damaged and requires inspection or repair.