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U0068 – BMW DTC

BMW DTC U0068 – Vehicle Communication Bus E (+) High

DTC U0068 meaning on BMW

The DTC U0068 code on a BMW indicates a problem with the Vehicle Communication Bus E (+) High circuit. This code is related to communication issues within the vehicle’s network, specifically affecting the high side of the communication bus.

BMW DTC U0068 symptoms

Symptoms of the DTC U0068 code on a BMW may include:

  • Check Engine Light illuminated
  • Communication errors with various vehicle modules
  • Problems with networked systems such as ABS, traction control, or transmission

BMW DTC U0068 causes

Common causes of the DTC U0068 code on a BMW include:

  • Faulty wiring or connectors in the communication bus circuit
  • Defective communication module or control unit
  • Interference from aftermarket electronic devices

BMW DTC U0068 seriousness

The DTC U0068 code should be addressed promptly as it can lead to communication failures between critical vehicle systems. Ignoring this code may result in performance issues or safety concerns due to the loss of communication between modules.

How to diagnose DTC U0068 on BMW

To diagnose the DTC U0068 code on a BMW, follow these steps:

  1. Use a diagnostic scanner to retrieve the fault codes stored in the vehicle’s computer.
  2. Inspect the wiring and connectors in the Vehicle Communication Bus E (+) High circuit for any damage or corrosion.
  3. Check for any aftermarket devices that may be causing interference with the communication bus.
  4. Test the communication modules and control units for proper functionality.

How to fix DTC U0068 on BMW

To fix the DTC U0068 code on a BMW, consider the following:

  1. Repair or replace any damaged wiring or connectors in the communication bus circuit.
  2. Address any issues with communication modules or control units by repairing or replacing them as needed.
  3. Remove any aftermarket electronic devices that may be causing interference with the communication bus.

How to erase DTC U0068 on BMW

To erase the DTC U0068 code on a BMW, you can use a diagnostic scanner to clear the fault codes stored in the vehicle’s computer. After addressing the underlying issue causing the code, clearing the code will reset the Check Engine Light and ensure proper operation of the vehicle’s systems.

Recommended tools & DTC Scanners for BMW

Best Diagnostic App for modern BMWs: BimmerLink

Recommended Bluetooth adapter for Bimmerlink: OBDLink CX

Cable adapter for Bimmerlink: Enet Cable USB Type C

For older BMWs we recommend: Autel AutoLink AL319 (2024 version)

Easy-to-use Multimeter for reliable diagnostics: AstroAI Auto-ranging Multimeter

← All BMW Diagnostic Trouble Codes

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