DTC U0404-41: Invalid Data Received from Gear Shift Control Module A - General checksum failure: Action
- Transmission control switch power or ground circuit open circuit, high resistance
- High speed CAN bus (powertrain) circuit short circuit to ground, short circuit to power, open circuit, high resistance
- Refer to the appropriate system wiring diagrams and check the FlexRay bus circuit for short circuit to ground, short circuit to power, open circuit, high resistance. Replace the wiring harness as necessary
- Transmission control switch fault