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 Golf Siemens 06A906019L 5WP438803
Vendors's code: 5WP438803
Product code: 5WP438803
Barcode:
Code 39:
ISBN:
€101.63
Price
€101.63
€125.00
Price
€125.00
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 Golf Siemens 06A906019L 5WP438803
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€30.00
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(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
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Looking for a Siemens 06A906019L ECU for a Golf?
This used, working unit has VW number 06A906019L and Siemens number 5WP438803 (5WP4388 03 on the label). Compare both with the label on your ECU and choose the locked or unlocked version.
Engine Control Unit Volkswagen Golf Siemens 06A906019L 5WP438803
The single letter L at the end of VW number 06A906019L distinguishes this ECU from other versions with the same base number. The manufacturer is Siemens, which gave it the number 5WP438803. The unit comes from a petrol Volkswagen Golf and controls fuel injection and ignition; we do not state the engine size.
Numbers on the label
- 06A906019L – VW part number
- 5WP438803 – Siemens number, printed on the label as 5WP4388 03
It is the numbers, not just the car model, that determine compatibility. The letter L denotes the software and hardware version, so a unit with a different letter may not work with your Golf.
Symptoms of an engine ECU fault
- the engine cranks but will not start despite working ignition,
- internal ECU faults appear,
- diagnostics cannot connect to the unit,
- the engine runs rough although the sensors are working.
First check the connector, wiring loom and fuses – they, rather than the unit itself, are often the source of the problem.
Choose your ECU version
For workshops that unlock and program ECUs themselves, we offer the locked version – with the data and immobiliser of the previous car, to be unlocked, programmed and matched by the workshop. If you prefer a unit prepared by us, choose the unlocked version – we will take care of it before dispatch, usually within 1–2 working days.
The method depends on the part number, software and immobiliser: PIN / CAR PASS, Virgin, IMMO OFF, auto programming or a clone. Not every one will be possible for 06A906019L, so please ask before you buy. Description: ECU preparation options.
Questions and answers
| Is 5WP4388 03 the same number as 5WP438803? |
|---|
| Yes – on the label the number is simply written with a space. |
| Which Golf does the 06A906019L fit? |
| We do not assign it to an engine size. What matters is that the numbers match the label on your unit. |
| What condition is this ECU in? |
| It is a used, working part in good condition. You will find the warranty period in the product specification table. |
Send your question or a photo of the label to contact@auto24parts.com.
