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.
U0402Implausible Data Received From TCMU0402Implausible Data Received From TCM - (Transmission Control Module)U0402IMPLAUSIBLE DATA RECEIVED FROM TCMU0402Implausible Data Received From TCM (ED6, ED8)Manufacturer communications
34Original wording in English
CHRYSLER, FIAT, JEEP, RAM
Reported code forms U0402
Transmission If are working on a vehicle with a transmission concern that has DTC U0402 please call Jason LeBeau at (248) 613-7488 prior to working on the unit. If Jason cannot be reached within 15 minutes proceed with…
CHRYSLER, DODGE
Reported code forms U0402
Flash: 2.4L Powertrain Diagnostic and System Improvements This bulletin involves reprogramming the Powertrain Control Module (PCM) with the latest available software. A small number of customers may experience a…
CHRYSLER, DODGE
Reported code forms U0402
Flash: 2.4L Powertrain Diagnostic and System Improvements This bulletin involves reprogramming the Powertrain Control Module (PCM) with the latest available software. A small number of customers may experience a…
CHRYSLER
Reported code forms U0402
Flash: 3.6L Powertrain Diagnostic and System Improvements This bulletin involves reprogramming the Powertrain Control Module (PCM) with the latest available software. Customers may experience a Malfunction Indicator…
CHRYSLER
Reported code forms U0402
Flash: 3.6L Powertrain Diagnostic and System Improvements This bulletin involves reprogramming the Powertrain Control Module (PCM) with the latest available software. Customers may experience a Malfunction Indicator…
CHRYSLER
Reported code forms U0402
Flash: 2.4L Powertrain Diagnostic and System Improvements This bulletin involves reprogramming the Powertrain Control Module (PCM) with the latest available software. A small number of customers may experience a…
Check vehicle applicability
3A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
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.