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.
P174900Automatic transmission control module incorrect codeManufacturer communications
3Original wording in English
AUDI
Reported code forms P1749
Incorrect coding in control module after software update (DTC P1749 stored in TCM)
AUDI
Reported code forms P1749
The self-coding function of the TCM may not complete during a software update. Incorrect coding in control module after software update (DTC P1749 stored in TCM)
AUDI
Reported code forms P174900
DTC P174900 (Automatic transmission control module incorrect code) appears in the Transmission Control Module (TCM) after an SVM update. The self-coding function of the TCM may not complete during a software update.
Check vehicle applicability
2A 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.