G13BB light throttle judder/cutout

Hi all! Been having an issue with my g13bb jimny cutting out on very light throttle. It’s not a typical misfire it’s almost as if the key is turned off and then back on for a split second. During this time the check engine light flashes and then all will resume as normal. Sometimes when the throttle is continued to be held at lightly open it will repeat this every few seconds. Haven’t noticed any other symptoms with this. 
Car has had new spark plugs to no avail. 
Thanks in advance for the help!

Codes are as follows using the paperclip technique:
13
23
31
Any help on understanding this would be appreciated.

13 - heated oxygen sensor circuit - signal voltage low
23 - IAT sensor circuit - signal voltage high
31 - MAP sensor circuit - signal voltage low

Codes that include the word circuit suggest that the problem lies with the wiring to the sensor rather than the sensor itself, so don't throw a new sensor at it as the first step.

After clearing the codes it only returned with the code 31 which indicated a map sensor error. After doing some forum searching I found that the map sensor has its own filter which can become blocked located at the back of the intake manifold. After removing the map sensor pipe and revving the engine to ‘back flush’ the sensor. The problem is solved! My guess is the sensor filter was blocked and not allowing the map sensor to operate properly. Thanks everyone again for the help!