U1000 GM: CLASS 2 COMMUNICATION MALFUNCTION CONDITIONS.
U1000 NISSAN: CAN COMMUNICATION LINE
U1000 ISUZU: CLASS 2 COMMUNICATION ID NOR LEARNED.
U1000 INFINITI: CAN COMMUNICATION LINE - SIGNAL MALFUNCTION.
POST UPDATED IN June, 2023
U1000 GM: CLASS 2 COMMUNICATION MALFUNCTION CONDITIONS.
U1000 NISSAN: CAN COMMUNICATION LINE
U1000 ISUZU: CLASS 2 COMMUNICATION ID NOR LEARNED.
U1000 INFINITI: CAN COMMUNICATION LINE - SIGNAL MALFUNCTION.
The ECU (Engine Control Unit) is the vehicle’s main computer. Although it cannot communicate with a module or series of modules, it transmits commands to these devices or modules through the CAN bus (Control Area Network) so that they can perform certain tasks or functions. A vehicle is incorporated with at least two CAN bus networks, and each one of these is connected to the modules.
The Control Area Network allows sending messages at high speed to and from the Engine Control Module (ECM) and its associated modules. This makes it possible they can interact with each other. These modules have their identification code and send binary coded signals to the ECM.
When the U1000 OBDII fault code is set, it is because a class 2 communication fault was found. Note that from this code it will proceed an additional code, which identifies the module or area that has the fault.
Although the causes of the U1000 OBD2 diagnostic code may vary by manufacturer, these are as follows:
The steps to solve the OBDII DTC U1000 OBDII code are: