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.
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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.
U0300-00Internal Control Module Software Incompatibility
U0300INTERNAL CONTROL MODULE SOFTWARE INCOMPATIBILITY
U0300Internal Control Module Software Incompatibility.** Customers may experience one or more of the following
Manufacturer communications
22Original wording in English
JEEP
"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 - Internal Control Module Software Incompatibility. Customers may also experience:** ● After towing a heavy load…
JEEP
"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 - Internal Control Module Software Incompatibility.** Customers may experience one or more of the following: ● Rid…
NISSAN
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 COMM DATA", if stored in the TCM. Refer to page 2 in this bulletin for updated Diagnostic Procedure. HINT: DTC can…
JEEP
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 (DTC). ? U0300-00 - Internal Control Module Software Incompatibility-. Customers may experience one or more of the …
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 |
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.