A faulty transmission control module (TCM) most often causes limp mode with the gearbox stuck in one gear, harsh jolts when you select D or R, erratic gear changes, flashing PRND letters and a gearbox or engine warning light. However, the same symptoms are often caused by a low gearbox oil level, a weak battery, a poor earth or a faulty sensor. To test a transmission control module, start by checking the battery and reading the fault codes with a diagnostic tool that can talk to the gearbox control unit, then check the power supply, the connector, the oil and the live data. Below we explain the symptoms, the diagnostic steps and what the most common fault codes mean.
Engine Control Unit Skoda Fabia 1.2 AZQ Siemens Simos 3PE 03E906033A 5WP4012007
Vendors's code: 5WP4012007
Product code: 5WP4012007
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 1.2 AZQ Siemens Simos 3PE 03E906033A 5WP4012007
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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 can you check whether ECU 5WP4012007 will fit a Fabia 1.2 AZQ?
Read the sticker on your current unit: it should show the VW number 03E906033A and the Siemens number 5WP40120 07. This used, fully working Simos 3PE comes from a Fabia with the 1.2 AZQ engine.
Engine Control Unit Skoda Fabia 1.2 AZQ Siemens Simos 3PE 03E906033A 5WP4012007
What sets this Simos 3PE unit apart is the Siemens number 5WP4012007 – the VW number 03E906033A is the same as on another version of this ECU. The unit comes from a Skoda Fabia 1.2 with the AZQ petrol engine. It calculates the fuel quantity and ignition advance, and also controls the idle.
ECU markings
- 5WP4012007 – Siemens number, on the label 5WP40120 07
- 03E906033A – VW/Skoda part number
- Simos 3PE – ECU family
When replacing, the safest choice is a unit with identical Siemens and VW numbers. The letter at the end of the VW number denotes the software or hardware version, and the 5WP number specifies the build more precisely.
How to recognise a faulty ECU
- no start despite a good power supply and fuel delivery,
- faults on several sensors at once, even though each of them is working,
- rough running both cold and warm,
- loss of communication with the ECU after water ingress or a voltage spike.
Start by reading the fault codes and measuring the voltage at the connector – the wiring, not the unit, is often to blame.
Locked or unlocked version?
You can order this unit in one of two versions. The locked one holds the data and immobiliser of the car it came from – the choice for a garage that will unlock, program and adapt it itself. We prepare the unlocked one before dispatch, usually within 1–2 working days.
The available method (PIN / CAR PASS, Virgin, IMMO OFF, auto programming or cloning) depends on the part number, software and immobiliser, so please ask about it before you buy. Details: ECU preparation options.
Questions and answers
| How is the number 5WP4012007 written on the sticker? |
|---|
| With a space: 5WP40120 07. It is the same number, just written differently. |
| What should I send before ordering the unlocked version? |
| A photo of the label on your current ECU, or all the numbers from it. On that basis, we will establish which preparation method is possible. |
| Can I fit the locked version myself? |
| Only if you have the equipment for unlocking, programming and adaptation. Without it, you are better off choosing the unlocked version. |
| Is the ECU fully working and does it come with a warranty? |
| Yes, the unit is used, fully working and in good condition. You will find the warranty period in the product specification table. |
We will help you choose the right version – send the ECU numbers to contact@auto24parts.com.
