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 1.4 FSI Bosch 03C906056H 0261S02004
Vendors's code: 0261S02004
Product code: 03C906056H
Barcode:
Code 39:
ISBN:
€203.25
Price
€203.25
€250.00
Price
€250.00
Ask about the product
Engine Control Unit Volkswagen Golf 1.4 FSI Bosch 03C906056H 0261S02004
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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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Does ECU 03C906056H fit a Golf 1.4 FSI?
Yes, if your current unit has VW number 03C906056H and Bosch number 0261S02004 (0 261 S02 004 on the label). It is a used, working ECU for the 1.4 FSI engine, sold locked or unlocked.
Engine Control Unit Volkswagen Golf 1.4 FSI Bosch 03C906056H 0261S02004
In the Golf 1.4 FSI, the engine control unit is responsible for direct petrol injection and ignition, so if it fails the car is usually immobilised. This Bosch unit has VW number 03C906056H and Bosch number 0261S02004. It is used, working and in good condition.
Numbers to compare
- 03C906056H – VW part number
- 0261S02004 – Bosch number, as printed on the label: 0 261 S02 004
- 1.4 FSI – petrol engine for which we list the unit
When comparing, note the letter H at the end of the VW number – it designates the software and hardware version. A different letter means a different ECU version.
ECU failure symptoms
- the FSI engine will not start, although fuel pressure and ignition are fine,
- limp mode and a marked loss of power with no sensor fault,
- no communication with the unit during diagnostics,
- internal ECU faults that return after being cleared.
First check the wiring loom, connector and earths – only then suspect the unit.
How to choose the ECU version
If you want an ECU prepared for your car, choose the unlocked version – we will take care of it before dispatch, usually within 1–2 working days. Workshops that will unlock, program and match the unit themselves choose the locked version – with the data and immobiliser of the previous car.
Whether PIN / CAR PASS, Virgin, IMMO OFF, auto programming or clone will work with 03C906056H depends on the part number, software and immobiliser. So please ask us before you buy. You will find a full explanation on the Engine control unit (ECU) variants page.
Questions and answers
| Are 0261S02004 and 03C906056H the same unit? |
|---|
| Yes – the first number was assigned by Bosch, the second is the VW part number. |
| Is the ECU suitable for an engine other than the 1.4 FSI? |
| We list it only for the Golf 1.4 FSI. For a different engine, compare the numbers and get in touch with us. |
| What should I have ready before ordering the unlocked version? |
| A legible photo of the label on your current ECU – we will use it to confirm the possible preparation method. |
| What condition is this ECU in? |
| It is a used part, working and in good condition. You will find the warranty period in the product features table. |
Contact regarding this ECU: contact@auto24parts.com.
