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.
Refurbished engine control unit Virgin Opel Corsa D 1.3 CDTI 55571621MZ
Vendors's code: MJD603S7
Product code: E33D-406E3
Barcode:
Code 39:
ISBN:
€264.23
Price
€264.23
€325.00
Price
€325.00
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
Refurbished engine control unit Virgin Opel Corsa D 1.3 CDTI 55571621MZ
Administratorem danych osobowych jest Auto24parts. Przetwarzamy je w celu przesłania odpowiedzi na zapytanie. Więcej informacji dotyczących przetwarzania danych osobowych znajduje się w polityce prywatności.
Shipping
from
€30.00
-
shipping
(Poland)
from
€30.00
-
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.
Where to find number 55571621MZ on Opel engine control units?
Refurbished Opel engine control unit with number 55571621MZ. Send us the numbers from the label on your control unit.
What does number 55571621MZ mean on Opel engine control units?
This is a refurbished engine control unit for Opel Corsa D. The main number is 55571621MZ, and whether the unit fits is decided by comparing all the numbers with the original part in your car. The listing indicates that the control unit was inspected before sale. The listing states that this control unit is for: Opel Corsa D. Engine given in the listing: 1.3 CDTI.
Control unit numbers and markings
You will find the numbers on the label of the control unit, while catalogues list them as a single string:
- 55571621 MZ (catalogue format: 55571621MZ), car manufacturer's original number.
Check the numbers on your control unit and compare them with those above. If any of them differs, contact us before ordering.
Control unit variant
This listing is for a control unit in the following variant(s): Refurbished. We describe the differences between the variants (locked, unlocked, Virgin, IMMO OFF, Plug and Play, clone, full set) on the ECU preparation options page. Before buying, send us the numbers from the label and we will confirm which variant is available for that number.
In the listing, the control unit is marked as refurbished, which does not mean that it is new.
In the Virgin version, the control unit has been cleared of data from the previous vehicle and has not yet been assigned to a new car. After fitting, it has to be programmed or adapted.
When an engine control unit needs replacing
- the engine idles unevenly or stalls for no obvious reason,
- the car loses power or goes into limp mode,
- the engine jerks when accelerating,
- the housing or connector of the control unit shows signs of water ingress or corrosion.
Similar symptoms also occur with faulty sensors, bad fuel or worn spark or glow plugs, so start with diagnostics and only then replace the electronics.
Questions and answers
| Can I send a photo for a compatibility check? |
|---|
| Yes. Contact us and send a photo of the label on the original control unit, and we will help you check whether this part will fit. |
| Does this control unit fit the 1.3 CDTI engine? |
| According to the listing it does, but confirm this with the numbers from the original control unit, because a single model comes with different versions. |
| How should I prepare for fitting the control unit? |
| Disconnect the battery, check the connector and the wiring, and after fitting read and clear the fault codes with a tester. Configuration is best carried out in a garage with suitable equipment. |
| What condition is this control unit in? |
| It is a refurbished control unit, not a new part. According to the listing, it was inspected before sale. You will find the warranty period in the product features table. |
Want to check before you buy? Send a photo of the sticker on your control unit and we will check that the numbers match.
