Invalid Data Received from Gear Shift Module
2014-2014 Lincoln MKX 3.7L V6
The 2014 Lincoln MKX is equipped with a 3.7L V6 engine. Below you'll find detailed u0404 diagnostic code information including labor time estimates, cost ranges, and technician notes specific to this engine configuration.
Description
The data received from the gear shift position module is invalid or not within expected range.
Symptoms
- Incorrect gear display
- Shifter position not recognized
- Transmission defaulting to safe mode
- Cannot select some gears
Common Causes
- Gear shift sensor fault
- Wiring issue to shift module
- Shift module calibration lost
- CAN bus noise
Diagnostic Steps
- Check gear shift module for codes
- Test shift position sensor outputs
- Check CAN bus wiring to shift module
- Recalibrate shift module
- Inspect shift mechanism
Repair Notes
Recalibrate or replace gear shift module. Check wiring to shifter assembly.
Related Codes
Other Network Codes
- U0001High Speed CAN Communication Bus
- U0001High Speed CAN Communication Bus
- U0002High Speed CAN Communication Bus Performance
- U0002High Speed CAN Communication Bus Performance
- U0003High Speed CAN Communication Bus (+) Open
- U0003High Speed CAN Communication Bus (+) Open
- U0004High Speed CAN Communication Bus (+) Low
- U0004High Speed CAN Communication Bus (+) Low
- U0005High Speed CAN Communication Bus (+) High
- U0005High Speed CAN Communication Bus (+) High
U0404 on Other Vehicles
Lincoln Aviator
2003-2003 4.6L V8 DOHC
Lincoln Aviator
2004-2004 4.6L V8 DOHC
Lincoln Aviator
2005-2005 4.6L V8 DOHC
Lincoln Aviator
2020-2020 3.0L Twin-Turbo V6
Lincoln Aviator
2020-2020 3.0L V6 Twin Turbo
Lincoln Aviator
2020-2020 3.0L V6 Twin Turbo Hybrid
Lincoln Aviator
2021-2021 3.0L Twin-Turbo V6
Lincoln Aviator
2021-2021 3.0L V6 Twin Turbo
Common Questions
What does code U0404 mean on a 2014-2014 Lincoln MKX?
U0404 stands for "Invalid Data Received from Gear Shift Module". The data received from the gear shift position module is invalid or not within expected range.
What are the symptoms of U0404 on a Lincoln MKX?
Common symptoms of U0404 include: Incorrect gear display, Shifter position not recognized, Transmission defaulting to safe mode, Cannot select some gears.
What causes U0404 on a 2014-2014 Lincoln MKX?
Common causes of U0404 include: Gear shift sensor fault, Wiring issue to shift module, Shift module calibration lost, CAN bus noise.
Last updated: March 2026