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Posts Tagged: U0001

U0001 code definition, most common causes and troubleshooting

Learn what a U0001 code High Speed CAN Communication Bus means and how to diagnose the code Modern vehicles are equipped with sophisticated electronic control units (ECUs) that communicate with each other over a network. This network, known as the controller area network (CAN) bus, allows different systems and modules to share data and ensure the vehicle operates smoothly. However, when there is a communication issue within this network, it can trigger a diagnostic trouble code (DTC) called U0001. The U0001 trouble code is defined as “High Speed CAN communication … Read More


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