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 AGR Bosch 038906018BQ 0281001849
Vendors's code: 0281001849
Product code: 038906018BQ
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 Octavia 1.9 TDI AGR Bosch 038906018BQ 0281001849
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€30.00
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from
€30.00
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(Poland)
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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The shipping cost applies to this product (in the selected variant - if applicable). It may change after adding other products to the cart.
Where can I find the number 038906018BQ on the Octavia ECU?
The VW number 038906018BQ, the Bosch number 0 281 001 849 and the software number 28SA3732 are on the label on the casing. This used, fully working unit comes from an Octavia 1.9 TDI with the AGR engine.
Engine Control Unit Skoda Octavia 1.9 TDI AGR Bosch 038906018BQ 0281001849
The ECU from the Octavia with the 1.9 TDI engine, code AGR, is a Bosch unit numbered 0281001849. VW/Skoda gave it the number 038906018BQ, and the label also shows the Bosch software number 28SA3732. The ECU manages injection quantity and timing on the diesel.
Numbers on the label
- 038906018BQ – VW/Skoda part number
- 0281001849 – Bosch number (written 0 281 001 849)
- 28SA3732 – Bosch software number
- AGR – engine code
The letters BQ distinguish this ECU from other 038906018 versions. If your Octavia has the AGR engine, also compare the software number.
When might the ECU need replacing?
- the engine cuts out while driving or will not start at all,
- the glow plug or engine warning light comes on for no obvious reason,
- the diagnostic tool cannot connect to the unit,
- the unit has suffered water damage or a voltage surge.
Before buying, it is worth measuring the ECU supply voltage and checking the connectors for corrosion.
Unlocking and the immobiliser
The engine control unit works with the immobiliser, which is why we offer it in two forms. In the unlocked version, we prepare the unit before dispatch (usually 1–2 working days). In the locked version, it keeps the data and immobiliser of the previous car – this is the option for workshops that will handle the unlocking, programming and matching themselves.
Not every unit can be prepared the same way: PIN / CAR PASS, Virgin, IMMO OFF, auto programming and cloning depend on the part number, software and immobiliser. Ask before you buy. Details: ECU preparation options.
Questions and answers
| Does this unit fit an Octavia with a different engine code? |
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| It comes from an AGR engine. Compatibility is determined by the number 038906018BQ – if yours has a different number, get in touch. |
| Does the 038906018BQ ECU need programming? |
| The locked version – yes. We will prepare the unlocked version before dispatch. |
| What condition is the unit in, and is there a warranty? |
| The ECU is used, fully working and in good condition. You will find the warranty period in the product specification table. |
Need help choosing an option? Send the numbers from the label to contact@auto24parts.com and we will tell you what is possible.
