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Electronic systems, stereo and Holden iQ, wiring, it all goes here....
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Car54
Posts: 87
Joined: Sun Nov 14, 2021 10:08 pm
Location: Allentown, PA

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Post by Car54 »

Just did some work on my car this past few days.

Changed headlights, put in a new ac line from firewall to drivers headlight, line broke at condenser when I took radiator out in the winter.

I go to start the car and there is nothing, no fuel pump priming nothing. Scanned for codes and this is what I’m getting. Lights n dash windows and all that work.

B2750-02 & 04. Pass key data communication failure
B3875-02 & 04. Manufacturer defined??

U101 lost communication with TCM.

Any suggestions where to look?
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