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Dan
Dan, Technician
Category: Nissan
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Experience:  Independent Shop Experience, 2 Year Automotive Diploma, & Access to Information Database
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I have Diagnosis code U1001/U1000 CAN on my 2003 Nissan Pathfinder.

Resolved Question:

I have Diagnosis code U1001/U1000 CAN on my 2003 Nissan Pathfinder. What are those codes represent?
Submitted: 7 years ago.
Category: Nissan
Expert:  Dan replied 7 years ago.

This code is known be be caused by bad ground. Can be caused from a bad passenger side airbag ground. Here is a technical service bulliten about ground problems and locations. Let me know if you have any other questions.

 

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U1000 Controller Area Network Line Malfunction

Possible CausesSetting Conditions
  • CAN connector is damaged or is disconnected
  • CAN communication line is open, shorted to ground or shorted to voltage
  • One of the modules is shorted and pulling the CAN voltage low

 

 

U1001 Controller Area Network Line Malfunction

Possible CausesSetting Conditions
  • CAN connector is damaged or is disconnected
  • CAN communication line is open, shorted to ground or shorted to voltage
  • One of the modules is shorted and pulling the CAN voltage low

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