Low Speed CAN Communication Bus (+) High
The U0023 OBD-II code indicates a Low-Speed CAN Communication Bus (+) High issue. This code typically points to a communication fault within the vehicle’s CAN (Controller Area Network) system, specifically the Low-Speed CAN bus. The CAN bus is a network system that allows various control modules (e.g., engine control, transmission control, airbag system) in the vehicle to communicate with each other.
The "Low-Speed CAN Communication Bus (+) High" code is triggered when the voltage signal from the Low-Speed CAN bus (+) line is higher than expected by the vehicle’s computer. The vehicle’s control modules use this communication network to exchange data, and any issue in this communication can lead to malfunctions in various systems.
Symptoms:
Warning Lights, Communication Failures, Loss of Data Communication, Difficulties with Diagnostics
Possible Causes of U0023 Code :
How to Fix it?
Ensure to check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.
Common Diagnose and Repairs:
Driving with vehicle warning codes can be dangerous and may do further damage to your vehicle. It is highly advisable that you have the vehicle inspected and diagnosed by a certified vehicle technician as soon as possible.
Book a repair appointmentRun a CarValid Vehicle History Report first!
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