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 Passat 1.6 AHL Siemens 3B0907557D 5WP436701
Vendors's code: 5WP436701
Product code: 3B0907557D
Barcode:
Code 39:
ISBN:
292,68 zł
Price
292,68 zł
360,00 zł
Price
360,00 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 Volkswagen Passat 1.6 AHL Siemens 3B0907557D 5WP436701
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Shipping
from
120,00 zł
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shipping
(Poland)
from
120,00 zł
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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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Does the 3B0907557D ECU fit a Passat 1.6 AHL?
Yes, if your current ECU has VW number 3B0907557D and Siemens number 5WP4367 01. This used, working module comes from a Volkswagen Passat with a 1.6 petrol engine, engine code AHL.
Engine Control Unit Volkswagen Passat 1.6 AHL Siemens 3B0907557D 5WP436701
The AHL engine code helps with matching, but the most important thing is still the number 3B0907557D with the letter D. The ECU was made by Siemens (5WP436701) and in the Volkswagen Passat 1.6 it manages fuel injection, ignition and idle speed of the petrol engine.
Numbers to compare
- 3B0907557D – VW part number, version D
- 5WP436701 – Siemens number, shown on the sticker as 5WP4367 01
- AHL – 1.6 engine code
The letter D distinguishes this module from other 3B0907557 versions. The difference may be in the software, so a match on the full number matters more than the engine code alone.
Possible failure symptoms
- the Passat will not start despite a working ignition system,
- the engine warning light is on and the fault codes point to the ECU,
- the engine runs unevenly with no mechanical cause,
- no connection to the module on the tester.
Before replacing the module, check the power supply, earths and connector. Also check that water is not collecting around the ECU – moisture often destroys the connector pins and, over time, the circuit board itself.
Versions available
In the locked version you receive the module with the data and immobiliser of the donor car – the choice for workshops that will unlock, program and adapt it themselves. We prepare the unlocked version before dispatch, most often within 1–2 working days.
For the 3B0907557D, which methods are available (PIN / CAR PASS, Virgin, IMMO OFF, auto programming, clone) depends on the software and immobiliser. Ask us what is possible before buying. Description of the options: ECU preparation options.
Questions and answers
| What does AHL mean? |
|---|
| It is the code of the 1.6 petrol engine the ECU comes from. |
| Will 3B0907557D replace 3B0907557C? |
| They are different versions – check the swap with us before buying. |
| What information should I send before ordering? |
| The numbers from your ECU label or a clear photo of it. |
| What condition is the ECU in? |
| It is a used part, working and in good condition. You will find the warranty period in the product features table. |
Send compatibility questions to contact@auto24parts.com.
