Reference meaning
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.
Narrow by vehicle
A 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.
Scan worksheet →Manufacturer wording
Source wording can vary by vehicle and suffix. It is shown as written, not as a universal diagnosis.
C2020-01ECU Internal Fault - General Electrical Failure
C2020-01ECU Internal Fault - General Electrical Failure
Manufacturer communications
11Original wording in English
FIAT, JEEP
Flash: Drivetrain Control Module (DTCM) Diagnostic and System Improvements This bulletin involves reprogramming the DTCM with the latest available software. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find one or more of the following Diagnostic Trouble …
FIAT, JEEP
Flash: Drivetrain Control Module (DTCM) Diagnostic and System Improvements This bulletin involves reprogramming the DTCM with the latest available software. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find one or more of the following Diagnostic Trouble …
FIAT, JEEP
Flash: Drivetrain Control Module (DTCM) Diagnostic and System Improvements This bulletin involves reprogramming the DTCM with the latest available software. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find one or more of the following DTCs:C2502-64 - Sig…
FIAT, JEEP
Flash: Drivetrain Control Module (DTCM) C2020-01 ECU Internal Fault setting in the DTCM This bulletin involves reprogramming the Drivetrain Control Module (DTCM) with the latest available software. Some vehicles may experience the All Wheel Drive Light (AWD) illuminating due to DTC C2020-01 ECU Internal Fault setting erroneously…
Check vehicle applicability
9A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
| Make | Model | Model year |
|---|---|---|
| Fiat | 500 ↗ | 2016 |
| Fiat | 500 ↗ | 2015 |
| Fiat | 500X ↗ | 2018 |
| Fiat | 500X ↗ | 2017 |
| Fiat | 500X ↗ | 2016 |
| Jeep | RENEGADE ↗ | 2018 |
| Jeep | RENEGADE ↗ | 2017 |
| Jeep | RENEGADE ↗ | 2016 |
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.