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 Octavia 1.9 TDI Bosch EDC16U34 03G906021TG 0281014715 03G906021AB
Vendors's code: 0281014715
Product code: 0281014715
Barcode:
Code 39:
ISBN:
650,41 zł
Price
650,41 zł
800,00 zł
Price
800,00 zł
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 Octavia 1.9 TDI Bosch EDC16U34 03G906021TG 0281014715 03G906021AB
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from
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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 I check whether the 03G906021TG fits your Octavia 1.9 TDI?
Read the label on your unit's casing and compare the VW number with the TG suffix. This Bosch EDC16U34 ECU also carries a second number, 03G906021AB, and the Bosch number is 0281014715.
Engine Control Unit Skoda Octavia 1.9 TDI Bosch EDC16U34 03G906021TG 0281014715 03G906021AB
This engine control unit comes from a 2008–2009 Octavia 1.9 TDI. The Bosch EDC16U34 unit numbered 03G906021TG controls injection, turbo boost and starting of the diesel engine. The same label as the Bosch number 0 281 014 715 also shows a second VW number – 03G906021AB.
Numbers on the label
- 03G906021TG – main VW/Skoda part number,
- 03G906021AB – second VW number,
- 0281014715 – Bosch number (0 281 014 715),
- EDC16U34 – ECU family.
Use the number 03G906021TG for matching. The letters at the end of the VW number distinguish software and hardware versions, so, for example, TG and TB are different units.
When the ECU may cause problems
- the engine starts and cuts out shortly afterwards,
- the car runs in limp mode and the faults come back after clearing,
- the engine or glow plug warning light stays on constantly,
- the unit does not communicate with the diagnostic tool.
Start by checking whether the immobiliser recognises the key, and check the ECU power supply.
Locked vs unlocked – the differences
A locked ECU contains the immobiliser and data of the Octavia it came from. This version is for workshops that handle the unlocking, programming and matching to the car themselves. The unlocked ECU is prepared in-house before dispatch – usually within 1–2 working days.
There is no single method for all units. PIN / CAR PASS, Virgin, IMMO OFF, auto programming or cloning – what is possible for 03G906021TG depends on the part number, software and immobiliser. Ask us before placing your order. Details: ECU preparation options.
Questions and answers
| My ECU label says 03G906021AB. Will this one fit? |
|---|
| The AB number alone is not enough. Check the main VW number on the label or send us a photo of it. |
| Does it fit an Octavia from outside 2008–2009? |
| The year is a guide; what decides is whether the main number matches your unit. |
| Condition and warranty? |
| Used, fully working and in good condition. You will find the warranty period in the product specification table. |
Email us at contact@auto24parts.com – we will check the numbers before dispatch.
