The automatic transmission control unit (often designated as TCU or TCM) is a crucial electronic component responsible for smooth and trouble-free gear shifting. Its failure, most often caused by overheating, short circuits, or water damage, results in jerking, an inability to shift gears, or the vehicle entering limp mode. Purchasing a new module at an authorized dealership is a massive expense, which is why replacing it with a fully functional, used original is the most reasonable solution.
Engine Control Unit Skoda Fabia 1.4 MPI AQW Siemens Simos 3PA 047906033C 5WP44199
Vendors's code: 5WP44199
Product code: 047906033C
Barcode:
Code 39:
ISBN:
Select a product option:
Individual variants may differ in price
product option
Important: Depending on the ECU type and vehicle model, not all of the options listed below may be available.
To select the correct option for your vehicle and ECU, please contact us before purchasing:
contact@auto24parts.com
1. Locked
This option is intended for professional workshops with the required specialist equipment and technical knowledge.
The ECU has been removed from a vehicle intended for recycling and still contains the immobilizer data and other information from the previous vehicle. Before it can be used in another car, it must be unlocked and then programmed using specialist automotive diagnostic equipment.
2. Unlocked
Several preparation methods may be available. The possible options depend on the ECU type, vehicle model and immobilizer system. Please contact us before purchasing, as some preparation methods are not available for every ECU.
Our electronics specialists can prepare the ECU in one of the following ways:
a) ECU with PIN code (Car Pass)
The PIN code is supplied, but programming with a suitable diagnostic tool is still required. After installing the ECU, it must be reset using the supplied PIN code and then programmed to the vehicle’s immobilizer system.
b) VIRGIN ECU
The data from the previous vehicle is removed and the ECU is restored to a clean, factory-like state. After installation, it must be programmed to the vehicle using a compatible specialist diagnostic tool. Unless another preparation method is specified in the product description, this is the standard unlocking option for most of our ECUs.
c) Plug & Play – IMMO OFF
The immobilizer function is disabled in the ECU. After installation, the engine can start without additional immobilizer programming. Please note that the vehicle will no longer have an active immobilizer function, and an immobilizer warning light or fault code may remain, depending on the vehicle model.
d) Plug & Play – Automatic Programming
After installation, the ECU automatically learns and saves the required vehicle data. No additional programming is normally required.
e) Plug & Play – 1:1 Clone
The data from your original ECU is copied to another fully functional ECU. The cloned unit is then ready for installation without additional programming.
You must send us your original ECU so that we can transfer its data to the replacement unit.
The original ECU must have working communication with the vehicle, a diagnostic tool or our programming equipment. If the required data cannot be read, a complete 1:1 clone may not be possible.
3. Complete Plug & Play Set
A complete matched set containing the ECU, immobilizer components and all other parts required to start the vehicle without additional programming. All components supplied in the set must be installed in the vehicle.
Important:
Dispatch time depends on the selected option. If an unlocked or specially prepared version is ordered, the preparation service usually requires an additional 1–2 business days.
Ask about the product
Engine Control Unit Skoda Fabia 1.4 MPI AQW Siemens Simos 3PA 047906033C 5WP44199
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Price 30 euros applies shipments to 5 kg on worldwide. Above this weight, please contact us by email to check price
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How does ECU 047906033C differ from other 047906033 versions?
The letter C at the end of the VW number denotes a different software or hardware version from, say, A or H, plus a different Siemens number – here 5WP44199. This used, fully working unit comes from a 2000–2001 Fabia 1.4 MPI AQW.
Engine Control Unit Skoda Fabia 1.4 MPI AQW Siemens Simos 3PA 047906033C 5WP44199
A Fabia 1.4 MPI with the AQW engine that will not start, or runs roughly despite a working ignition system, may need a replacement ECU. This unit, 047906033C, is a Siemens Simos 3PA from a 2000–2001 car. It controls multi-point injection, ignition and idle on the petrol engine.
How to identify this ECU
- 047906033C – VW/Skoda part number
- 5WP44199 – Siemens VDO number
- Simos 3PA – ECU family
- AQW – engine code
Look for both numbers on the label. If your unit has a different letter after 047906033, please ask us before you buy – the versions are not always interchangeable.
Signs of ECU damage
- the starter turns, but the engine will not run,
- sudden cutting out once warm,
- no control of the fuel pump or cooling fan,
- the ECU does not respond to the diagnostic tool.
Also check the immobiliser and key, as a start inhibit is sometimes mistaken for an ECU failure.
Which version should you order?
There are two versions to choose from. With the unlocked one, we prepare the unit for your car before dispatch – usually within 1–2 working days, using a method chosen to suit the part number, software and immobiliser. PIN / CAR PASS, Virgin, IMMO OFF, auto programming or cloning are possible, but not always all of them, so please ask before you buy.
The locked one retains the previous car's data and immobiliser. It is an option for garages that handle unlocking, programming and adaptation themselves. We explain how it works on the ECU options page.
Questions and answers
| Does 047906033C fit every Fabia 1.4 MPI? |
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| No – compatibility is decided by the ECU number, not the engine size alone. This unit comes from a car with the AQW engine. |
| How long does it take to prepare the unlocked version? |
| Usually 1–2 working days before dispatch. We confirm the method beforehand, as it depends on the part number, software and immobiliser. |
| Will ECU 047906033C start the engine straight after fitting? |
| The locked version will not – it has to be unlocked and matched to the immobiliser. With the unlocked version, it depends on the preparation method agreed before purchase. |
| Is the unit new? |
| No – it is a fully working used ECU in good condition. You will find the warranty period in the product specification table. |
Have a question about compatibility? Email contact@auto24parts.com with a photo of your ECU's label.
