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 wording
Source wording can vary by vehicle and suffix. It is shown as written, not as a universal diagnosis.
U0140Lost Communication With Body Control ModuleU0140Lost Communication With Body Control Module (BCM) (12 MY DJ only)U0140Lost Communication With Body Control Module (BCM) and when attempting to clear from the PCM with a Scan Tool (wiTECH) will be unsuccessful to do soManufacturer communications
4Original wording in English
DODGE, RAM
Reported code forms U0140
Flash: Powertrain Diagnostic And System Enhancements This bulletin involves selectively erasing and reprogramming the Powertrain Control Module (PCM) with new software. A small number of customers may experience a…
DODGE
Reported code forms U0140
Flash: 5.7L Powertrain Diagnostic And System Enhancements This bulletin involves reprogramming the Powertrain Control Module (PCM) with updated software. During normal diagnostics a technician may find Diagnostic…
DODGE
Reported code forms U0140
Flash: Diagnostic And System Improvements This bulletin involves diagnosis and selectively erasing and reprogramming the Powertrain Control Module (PCM) with new software or if necessary replacing the PCM based on the…
CHALET, DODGE, RAM
Reported code forms U0140
Flash: MIL Illumination With Transmission And Driveability Improvements This bulletin involves flash reprogramming the Powertrain Control Module (PCM) with new software. The customer may experience a MIL illumination.…
Check vehicle applicability
4A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
Historical vehicle association; OBD-II compatibility is not established by this record.
Historical records · 1 · Historical vehicle association; OBD-II compatibility is not established by this record.
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.