# U2050 on the 2019 Mazda Mazda3

The bulletins listed name this code in NHTSA's summary, or are about the same components. A bulletin or a recall listed here may apply to the model year. None of it is a diagnosis.

This code is specific to a manufacturer and is not described here.

## Bulletins for this model year that name U2050

- [10194778](https://open.wenmarpro.com/bulletins/10194778), 2021-06-02: When the body control module \(BCM\) has been replaced or reprogrammed and the software is updated to the file names shown below, DTC U2050:55\-BCM \(Activation of remote control not implemented\) may be stored in memory without any warning indication for the driver.
- [10185053](https://open.wenmarpro.com/bulletins/10185053), 2021-01-05: When the Telematics Communication Unit \(TCU\) has been replaced or reprogrammed and the software is updated to ones shown below, DTC U2050:55\-TCU \(Activation of remote control not implemented\) may be stored in memory with the message, In\-Vehicle Network Malfunction, displayed in the multi\-information display.
- [10183659](https://open.wenmarpro.com/bulletins/10183659), 2020-12-04: When the body control module \(BCM\) has been replaced or reprogrammed and the software is updated to the file names shown below, DTC U2050:55\-BCM \(Activation of remote control not implemented\) may be stored in memory without any warning indication for the driver. This is caused by a communication error between the telematics communication unit \(TCU\) and BCM when the control software in them are not of the version being ready for activation of the connected service.
- [10183595](https://open.wenmarpro.com/bulletins/10183595), 2020-12-03: When the Telematics Communication Unit \(TCU\) has been replaced or reprogrammed and the software is updated to ones shown below, DTC U2050:55\-TCU \(Activation of remote control not implemented\) may be stored in memory with the message “In\-Vehicle Network Malfunction” displayed in the multi\-information display. This is caused by a communication error between the TCU, the Connectivity Master Unit \(CMU\), and the Body Control Module \(BCM\) when the control software in them are not of the version being ready for activation of connected service. To correct this concern, the control software of the TCU, CMU and BCM have been modified.
- [10182102](https://open.wenmarpro.com/bulletins/10182102), 2020-11-04: When the Telematics Communication Unit \(TCU\) has been replaced or reprogrammed and the software is updated to ones shown below, DTC U2050:55\-TCU \(Activation of remote control not implemented\) may be stored in memory with the message “In\-Vehicle Network Malfunction” displayed in the multi\-information display. • Japan built vehicles: BDGF\-67CK2\-B or later suffix. • Mexico built vehicles: BDTS\-67CK2\-A or later suffix. NOTE: The Description for DTC U2050:55\-TCU will be added to MGSS. This is caused by a communication error between the TCU, the Connectivity Master Unit \(CMU\), and the Body Control Module \(BCM\) when the control software in them are not of the version being ready for activation of connected service. To correct this concern, the control software of the TCU, CMU and BCM have been modified. When you encounter this concern, reprogram \(update\) the BCM and the CMU to the latest version.
- [10180781](https://open.wenmarpro.com/bulletins/10180781), 2020-10-05: When the body control module \(BCM\) has been replaced or reprogrammed and the software is updated to the file names shown below, DTC U2050:55\-BCM \(Activation of remote control not implemented\) may be stored in memory without any warning indication for the driver. This is caused by a communication error between the telematics communication unit \(TCU\) and BCM when the control software in them are not of the version being ready for activation of the connected service.
- [10176036](https://open.wenmarpro.com/bulletins/10176036), 2020-06-02: When the Telematics Communication Unit \(TCU\) has been replaced or reprogrammed and the software is updated to ones shown below, DTC U2050:55\-TCU \(Activation of remote control not implemented\) may be stored in memory with the message In\-Vehicle Network Malfunction displayed in the multi\-information display. Japan built vehicles: BDGF\-67CK2\-B or later suffix. Mexico built vehicles: BDTS\-67CK2\-A or later suffix. NOTE: The Description for DTC U2050:55\-TCU will be added to MGSS. This is caused by a communication error between the TCU, the Connectivity Master Unit \(CMU\), and the Body Control Module \(BCM\) when the control software in them are not of the version being ready for activation of connected service. To correct this concern, the control software of the TCU, CMU and BCM have been modified.
- [10174575](https://open.wenmarpro.com/bulletins/10174575), 2020-05-04: When the Telematics Communication Unit \(TCU\) has been replaced or reprogrammed and the software is updated to ones shown below, DTC U2050:55\-TCU \(Activation of remote control not implemented\) may be stored in memory with the message "In\-Vehicle Network Malfunction" displayed in the multi\-information display. \- Japan built vehicles: BDGF\-67CK2\-B or later suffix. \- Mexico built vehicles: BDTS\-67CK2\-A or later suffix. NOTE: The Description for DTC U2050:55\-TCU will be added to MGSS. This is caused by a communication error between the TCU, the Connectivity Master Unit \(CMU\), and the Body Control Module \(BCM\) when the control software in them are not of the version being ready for activation of connected service. To correct this concern, the control software of the TCU, CMU and BCM have been modified. When you encounter this concern, reprogram \(update\) the BCM and the CMU to the latest version.
- [10173223](https://open.wenmarpro.com/bulletins/10173223), 2020-04-06: When the body control module \(BCM\) has been replaced or reprogrammed and the software is updated to the file names shown below, DTC U2050:55\-BCM \(Activation of remote control not implemented\) may be stored in memory without any warning indication for the driver. This is caused by a communication error between the telematics communication unit \(TCU\) and BCM when the control software in them are not of the version being ready for activation of the connected service
- [10171838](https://open.wenmarpro.com/bulletins/10171838), 2020-02-29: When the body control module \(BCM\) has been replaced or reprogrammed and the software is updated to the file names shown below, DTC U2050:55\-BCM \(Activation of remote control not implemented\) may be stored in memory without any warning indication for the driver.This is caused by a communication error between the telematics communication unit \(TCU\) and BCM when the control software in them are not of the version being ready for activation of the connected service.