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Tripac APU error Code 155. Lost CAN communication.
   
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Tripac APU error Code 155. Lost CAN communication.

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Tripac APU Code 155. Lost CAN Communication 

controller is bad (the one inside the cab).

 

Take it off (by prying two plastic openings at the bottom) and bringing it to a local electronics repair shop (search 'electronics' on google maps). Ask them to test for continuity and check any corroded elements.

 

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