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.
U0300-00Internal Control Module Software IncompatibilityU0300INTERNAL CONTROL MODULE SOFTWARE INCOMPATIBILITYU0300Internal Control Module Software Incompatibility.** Customers may experience one or more of the followingU0300INTERNAL CONTROL MODULE SOFTWARE INCOMPATIBILITYView all · Manufacturer wording →
Manufacturer communications
22Original wording in English
JEEP
Reported code forms U0300-00
"Flash: Air Suspension Control Module (ASCM) Updates **Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set the following Diagnostic Trouble Code (DTC): ● U0300-00 -…
JEEP
Reported code forms U0300
"Flash: Air Suspension Control Module (ASCM) Updates **Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set the following Diagnostic Trouble Codes (DTC): ● U0300 -…
NISSAN
Reported code forms U0300
ESM DIAGNOSTIC PROCEDURE UPDATE FOR DTC U0300 STORED IN TCM SERVICE INFORMATION The Electronic Service Manual (ESM) Diagnostic Procedure will be updated with additional information for diagnosing DTC U0300, for "CAN…
JEEP
Reported code forms U0300-00
Flash: Air Suspension Control Module (ASCM) Updates Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find the following Diagnostic Trouble Code…
AUDI
Reported code forms U030000
This bulletin provides a software update for when "All Wheel Drive Malfunction Message" is displayed in the instrument cluster and DTC U030000 is logged.
JEEP
Reported code forms U0300-00
Air Suspension Control Module (ASCM) Updates For Diagnostic Trouble Code (DTC) U0300-00 This bulletin involves informing the technician about reprogramming the ASCM with the latest available software after replacement…
Check vehicle applicability
85A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
| Make | Model | Model year |
|---|---|---|
| Audi | A4 | 2021 |
| Audi | A4 | 2020 |
| Audi | A4 | 2019 |
| Audi | A4 | 2018 |
| Audi | A4 | 2017 |
| Audi | A4 ALLROAD | 2021 |
| Audi | A4 ALLROAD | 2020 |
| Audi | A4 ALLROAD | 2018 |
| Audi | A4 ALLROAD | 2017 |
| Audi | A5 | 2021 |
| Audi | A5 | 2020 |
| Audi | A5 | 2019 |
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.