What does this code mean?
The wording below belongs to the named make and communication. Match the complete code, reporting module, model year and engine before applying it.
A code identifies a detected condition, not a part that must automatically be replaced.
Manufacturer communications
8Original wording in English
DODGE, JEEP
Reported code forms U0403 - 00
Drivetrain Control Module (DTCM) Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set the following Diagnostic Trouble Code (DTC): ● C1403 - 92 Transfer Case Range…
JEEP
Reported code forms U0403-00
"Transfer Case Shift Motor Wire Harness Connector Not Secured **Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set one or more of the following Diagnostic Trouble…
RAM
Reported code forms U0403-00
Flash: Drivetrain Control Module (DTCM) Diagnostic and System Improvements This bulletin involves reprogramming the DTCM with the latest available software. The technician may find one or more of the following DTCs:…
RAM
Reported code forms U0403-00
Flash: Drivetrain Control Module (DTCM) Diagnostic and System Improvements This bulletin involves reprogramming the DTCM with the latest available software. The technician may find one or more of the following…
RAM
Reported code forms U0403-00
Flash: Drivetrain Control Module (DTCM) Diagnostic and System Improvements This bulletin involves reprogramming the DTCM with the latest available software. The technician may find one or more of the following…
RAM
Reported code forms U0403-00
Flash: Drivetrain Control Module (DTCM) Diagnostic and System Improvements This bulletin involves reprogramming the DTCM with the latest available software. The technician may find one or more of the following DTCs:…
Check vehicle applicability
38A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
| Make | Model | Model year |
|---|---|---|
| Cadillac | ESCALADE | 2016 |
| Cadillac | ESCALADE | 2015 |
| Cadillac | ESCALADE ESV | 2016 |
| Cadillac | ESCALADE ESV | 2015 |
| Chevrolet | SILVERADO 1500 | 2014 |
| Chevrolet | SILVERADO 2500 | 2016 |
| Chevrolet | SILVERADO 2500 | 2015 |
| Chevrolet | SUBURBAN | 2016 |
| Chevrolet | SUBURBAN | 2015 |
| Chevrolet | TAHOE | 2016 |
| Chevrolet | TAHOE | 2015 |
| Dodge | DURANGO | 2025 |
Before replacing a part
Record codes and freeze-frame data. Check battery condition, related codes and visible wiring or hose damage. Follow the vehicle's diagnostic procedure and test results before replacing parts.
Can I keep driving?
A code alone cannot establish whether driving is safe. A flashing malfunction light, severe shaking, overheating, oil-pressure warning or loss of braking or steering needs prompt attention. Stop in a safe place and seek assistance when control or engine safety is affected. Follow the vehicle handbook.