# U0404 on the 2016 Jeep Grand Cherokee

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.

Nobody has written a description of this code yet.

## Bulletins for this model year that name U0404

- [10221548](https://open.wenmarpro.com/bulletins/10221548), 2022-09-26: Flash: Transmission Diagnostic And Shift Enhancements This bulletin involves reprogramming the Transmission Control Module \(TCM\) with the latest available software. Some customers may experience a Malfunction Indicator Lamp \(MIL\) illumination. Upon further investigation, a technician may find the following Diagnostic Trouble Code \(DTC\) stored in the TCM memory: · U0404 \- Invalid Data Received From Gear Shift Control Module "A". In addition, customers may experience the following conditions: · Bumps on 2 \- 1 down\-shift while braking. · The M on the shifter and Instrument cluster may be blinking. The following improvements are included in this update: · \*\*Improved 2 \- 1, 3 \- 2 and 6 \- 5 down\-shifts \(6.4L only\).\*\* · Improved 1 \- 2 light throttle up\-shifts.
- [10140237](https://open.wenmarpro.com/bulletins/10140237), 2018-06-11: Flash: Transmission Enhancements This bulletin involves reprogramming of the Transmission Control Module \(TCM\) with the latest available software. Some customers may experience a Malfunction Indicator Lamp \(MIL\) illumination. Upon further investigation, a technician may find the following Diagnostic Trouble Code \(DTC\) stored in the TCM memory: U0404 \- Invalid Data Received From Gear Shift Control Module "A". In addition, some customers may experience the following condition: The M on the shifter and Instrument cluster may be blinking.
- [10136530](https://open.wenmarpro.com/bulletins/10136530), 2018-05-14: Flash: Transmission Diagnostic And Shift Enhancements This bulletin involves reprogramming the Transmission Control Module \(TCM\) with the latest available software. Some customers may experience a Malfunction Indicator Lamp \(MIL\) illumination. Upon further investigation, a technician may find the following Diagnostic Trouble Code \(DTC\) stored in the TCM memory: · U0404 \- Invalid Data Received From Gear Shift Control Module "A". In addition, customers may experience the following conditions: · Bumps on 2 \- 1 down\-shift while braking. · The M on the shifter and Instrument cluster may be blinking. The following improvements are included in this update: · \*\*Improved 2 \- 1, 3 \- 2 and 6 \- 5 down\-shifts \(6.4L only\).\*\* · Improved 1 \- 2 light throttle up\-shifts.
- [10121646](https://open.wenmarpro.com/bulletins/10121646), 2017-11-03: Flash: Transmission Diagnostic And Shift Enhancements This bulletin involves reprogramming the Transmission Control Module \(TCM\) with the latest available software. Some customers may experience a Malfunction Indicator Lamp \(MIL\) illumination. Upon further investigation, a technician may find the following Diagnostic Trouble Code \(DTC\) stored in the TCM memory: · U0404 \- Invalid Data Received From Gear Shift Control Module "A". In addition, some customers may experience the following conditions: · \*\*Bumps on 2 \-1 down\-shift while braking.\*\* · The M on the shifter and Instrument cluster may be blinking. The following improvements are included in this update: · \*\*Improved 1 \- 2 light throttle up\-shifts.\*\*