U1173 – BMW DTC

BMW DTC U1173 – Message Monitoring Transmission Data3 Check Sum Error/Alive Check

DTC U1173 meaning on BMW

The DTC U1173 code on a BMW refers to a Message Monitoring Transmission Data3 Check Sum Error/Alive Check. This diagnostic trouble code indicates that there is an issue with the check sum error or alive check in the transmission data communication system of the vehicle.

BMW DTC U1173 symptoms

Symptoms of the BMW DTC U1173 code may include:

• Transmission shifting issues
• Erratic behavior of the transmission
• Check engine light illuminated on the dashboard

BMW DTC U1173 causes

Common causes of the BMW DTC U1173 code include:

• Faulty transmission control module
• Wiring or connection issues in the transmission data communication system
• Software glitches or malfunctions

BMW DTC U1173 seriousness

The DTC U1173 code should be addressed promptly as it can lead to transmission performance issues and potentially cause further damage if left unresolved. Ignoring this code may result in unsafe driving conditions and increased repair costs.

How to diagnose DTC U1173 on BMW

To diagnose the DTC U1173 code on a BMW, a mechanic would typically perform the following steps:

1. Use a diagnostic scanner to retrieve the fault codes stored in the vehicle’s computer
2. Inspect the transmission control module and related wiring for any visible damage or corrosion
3. Perform a thorough check of the transmission data communication system for faults

How to fix DTC U1173 on BMW

To fix the DTC U1173 code on a BMW, the following steps may be taken:

1. Repair or replace any damaged wiring or connections in the transmission data communication system
2. Update the software of the transmission control module if necessary
3. If the transmission control module is faulty, it may need to be replaced

How to erase DTC U1173 on BMW

To erase the DTC U1173 code on a BMW, a mechanic can use a diagnostic scanner to clear the fault codes stored in the vehicle’s computer. Once the issue has been addressed and fixed, the code can be erased to reset the system and turn off the check engine light.