![]() Generally, CAN bus systems allow for extremely fast communication between all control modules, as well as communication between all control modules and the PCM, which acts as the “clearing house” for all communications between control modules. Therefore, this guide will discuss code U1000 as it applies to Nissan with the definition ““CAN Communication Line – Signal Malfunction”.Īll modern vehicles are equipped with a CAN (Controller Area Network) serial communication system that interconnects all the control modules on the vehicle. * Note that some resources list code U1000 as “SCP (J1850) Invalid or Missing Data for Primary Id”, while others do not list code U1000 as applying to Nissan at all. Note that code U1000 on Nissan applications is a Class 2 communication malfunction, and therefore may or may not be accompanied by other generic or Nissan specific codes that identify at least the area in the CAN system where the fault occurred. OBD II fault code U1000 is a manufacturer specific code that is defined by carmaker Nissan as “CAN Communication Line – Signal Malfunction”*, and is set on Nissan applications when the PCM (Powertrain Control Module) detects a break in communication over the CAN bus system for a period of longer than 2 seconds. What are the common causes of code U1000?.We recommend Torque Pro Table of Contents By Reinier ( Contact Me) Last Updated Automobile Repair Shop Owner CodeĬAN communication line – signal malfunction (Buy Part On Amazon) ![]()
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