U1000 NISSAN - CAN Communication Line - Signal Malfunction
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What causes U1000 code?
- Controller Area Network (CAN) communication harness is open or shorted
- Faulty Engine Control Module (ECM)
- Poor harness ground connection.
U1000 Possible Symptoms
- If the U1000 stands alone, no symptoms may be present
- Symptoms will likely be present synonymous with the secondary code indicating a particular failure-a failed climate control module or a failed automatic headlight-dimming module for example
- In the case of a known Nissan TSB (technical service bulletin), symptoms may include engine stalling, hesitation, lack of power, failure to start or other potential symptoms.
- Controller Area Network (CAN) communication harness is open or shorted
- Faulty Engine Control Module (ECM)
- Poor harness ground connection.
- Engine Light ON (or Service Engine Soon Warning Light)
What are the U1000 Possible Causes..?
- Controller Area Network (CAN) communication harness is open or shorted
- Faulty Engine Control Module (ECM)
- Poor harness ground connection.
U1000 NISSAN Video
Check Out U1000 NISSAN Problem Solution Article in our other site
U1000 NISSAN Tech notes
Usually the problem is poor harness ground connection. There is a service bulletin for the following Nissan models with U1000 code: 2002-2006 Nissan Maxima 2004-2006 Nissan Titan 2004-2006 Nissan Armada 2002-2006 Nissan Sentra 2005-2006 Nissan Frontier 2002-2006 Nissan Altima 2005-2006 Nissan Xterra 2005-2006 Nissan Pathfinder 2004-2006 Nissan Quest 2003-2006 Nissan 350Z
When is the U1000 NISSAN code detected?
When ECM is not transmitting or receiving CAN communication signal of OBD (emission related diagnosis) for 2 seconds or more.
U1000 NISSAN Description
CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle multiplex communication line with high data communication speed and excellent error detection ability. Many electronic control units are equipped onto a vehicle, and each control unit shares information and links with other control units during operation (not independent). In CAN communication, control units are connected with 2 communication lines (CAN H line, CAN L line) allowing a high rate of information transmission with less wiring.
