U0014 – BMW DTC

BMW DTC U0014 – Medium Speed CAN Communication Bus (+) High

DTC U0014 meaning on BMW

The DTC U0014 code on a BMW indicates an issue with the Medium Speed Controller Area Network (CAN) communication bus. This code specifically points to a problem with the Medium Speed CAN Communication Bus (+) High signal.

BMW DTC U0014 symptoms

Symptoms of the DTC U0014 code on a BMW may include:

• Check Engine Light (CEL) illuminated on the dashboard
• Problems with various vehicle systems communicating with each other
• Issues with transmission shifting smoothly
• Problems with cruise control functionality

BMW DTC U0014 causes

Common causes of the DTC U0014 code on a BMW include:

• Faulty Medium Speed CAN Communication Bus (+) High circuit
• Loose or corroded wiring connections related to the CAN bus
• Defective control modules that communicate over the CAN bus

BMW DTC U0014 seriousness

The DTC U0014 code should be addressed promptly as it can lead to communication issues between various vehicle systems. Ignoring this code may result in performance issues and potential safety concerns.

How to diagnose DTC U0014 on BMW

To diagnose the DTC U0014 code on a BMW, you can follow these steps:

1. Use a diagnostic scanner to retrieve the specific fault codes stored in the vehicle’s computer.
2. Inspect the wiring and connectors related to the Medium Speed CAN Communication Bus (+) High for any signs of damage, corrosion, or loose connections.
3. Check the control modules that communicate over the CAN bus for any faults or malfunctions.

How to fix DTC U0014 on BMW

To fix the DTC U0014 code on a BMW, you can try the following solutions:

1. Repair or replace any damaged wiring or connectors related to the Medium Speed CAN Communication Bus (+) High.
2. Address any faults in the control modules that communicate over the CAN bus.
3. Clear the fault codes using a diagnostic scanner after the repairs have been made.

How to erase DTC U0014 on BMW

To erase the DTC U0014 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, you can reset the system and ensure that the Check Engine Light is no longer illuminated.

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

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