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 Volkswagen Polo 1.0 MPI Bosch 030906032BC 0261206766
Vendors's code: 0261206766
Product code: 030906032BC
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 Volkswagen Polo 1.0 MPI Bosch 030906032BC 0261206766
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Shipping
from
€30.00
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shipping
(Poland)
from
€30.00
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shipping
(Poland)
Price 30 euros applies shipments to 5 kg on worldwide. Above this weight, please contact us by email to check price
Shipping cost for the selected product
The shipping cost applies to this product (in the selected variant - if applicable). It may change after adding other products to the cart.
Will the 030906032BC module run the 1.0 MPI engine in your Polo?
Yes, if the car was fitted with the 030906032BC ECU from the factory – the Bosch number of this part is 0261206766. We sell a used, working unit from a Volkswagen Polo 1.0 MPI.
Engine Control Unit Volkswagen Polo 1.0 MPI Bosch 030906032BC 0261206766
The 1.0 MPI is a petrol engine with multi-point fuel injection, and in the Volkswagen Polo it is controlled by, among others, this Bosch module. The VW number 030906032BC and Bosch number 0261206766 let you compare it unambiguously with the part fitted in your car. Based on signals from the sensors, the ECU determines the fuel quantity and the ignition advance.
Numbers to compare
- 030906032BC – Volkswagen (VW) part number
- 0261206766 – Bosch number, written on the label as 0 261 206 766
The two-letter ending BC identifies the software or hardware version. A 030906032 ECU with a different ending is a different version.
How to recognise an ECU fault
- the engine will not start, even though the starter turns and fuel is getting through,
- the engine warning light is on and the memory holds injection or ignition faults with no component failure,
- the diagnostic tester cannot connect to the ECU,
- the engine stalls or idles unevenly.
Before deciding to replace it, inspect the connectors and wiring loom for corrosion and chafing.
Locked or unlocked version?
We offer this ECU in two versions. The locked one contains the data and immobiliser of the previous car – it is chosen by workshops that will unlock, program and adapt the module themselves. We prepare the unlocked one before dispatch, usually within 1–2 working days.
Not every preparation method is possible for every ECU: PIN / CAR PASS, Virgin, IMMO OFF, auto programming or clone depend on the number, software and immobiliser. Please ask us before buying. Details: ECU preparation options.
Questions and answers
| What should I send before ordering the unlocked version? |
|---|
| A photo of the label on your current ECU or all the numbers on it. Based on this, we will check which preparation methods are possible. |
| Can a workshop handle the locked version? |
| Yes, if it has equipment for programming and immobiliser adaptation. Without such equipment, it is better to choose the unlocked version. |
| Will the engine start straight away after fitting the 030906032BC? |
| Not with the locked version – the ECU must be programmed and adapted to the immobiliser. With the unlocked version it depends on the preparation method we agree before dispatch. |
| What condition is this part in? |
| Used, in good condition and fully working. You will find the warranty period in the product features table. |
If in doubt, write to us at contact@auto24parts.com. Give us the numbers from the casing of your current module and we will advise on the version.
