CAT Caterpillar ET Tagged Posts

(Solved) Nexiq USB link with CAT ET connection error 149

I’m using a NEXIQ USB Link with CAT Caterpillar ET 2011b and I need some help with connection settings.

Solution 1:

you can only connect with Nexiq engines on setting siguiebnte is the way:

Run ET

Go to and look for the connection prefgerencias (RP1210 mechanism Approved)

Ok, you ready configured to work with the Nexiq.

Solution 2:

First use

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How to fix the CAT ET SIS error



This means you have communication error between your CAT II / III adapter and the CAT ET SiS software setup. Usually it is a simple fix.

– In the CAT software go to UTILITIES   =>   PREFERENCES   =>  COMMUNICATIONS – CHOOSE: CATERPILLAR COM ADAPTER II – CHOOSE under PORTS: COM 7 – Click “OK” – Restart the computer and usually that is all you

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