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 Bosch 028906021GG 0281001649
Vendors's code: 0281001649
Product code: 0281001649
Barcode:
Code 39:
ISBN:
€121.95
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€121.95
€150.00
Price
€150.00
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Engine Control Unit Volkswagen Golf Bosch 028906021GG 0281001649
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What does the number 028906021GG on a Golf ECU mean?
It is the Volkswagen part number of the Bosch 0281001649 engine control unit (label: 0 281 001 649) from a diesel Volkswagen Golf. The module is used, fully working and available locked or unlocked.
Engine Control Unit Volkswagen Golf Bosch 028906021GG 0281001649
Older diesel Golfs have Bosch ECUs numbered in the 0 281 00… series, and this unit carries VW number 028906021GG. The module controls the fuel quantity, injection timing and starting. A fault most often shows up as a no-start or rough running.
How to identify this ECU
- 028906021GG – Volkswagen number; the letters GG denote the version
- 0281001649 – Bosch number, written on the label as 0 281 001 649
Compare both numbers with the label on your module. Golfs used many variants of 028906021 that differ in the suffix – this indicates the software or hardware version.
Symptoms of a faulty diesel ECU
- the engine cranks but will not fire despite a working pump,
- the engine cuts out right after starting,
- the ECU cannot be read by the diagnostic tool,
- smoking and jerking that are not caused by the injectors.
In older cars corroded contacts are often to blame – check the connector and earths before replacing the module.
How the ECU is prepared
You can order this ECU in an unlocked version – we prepare it before dispatch, usually within 1–2 working days – or locked, with the data and immobiliser from the previous vehicle, for a workshop that will unlock, program and adapt the module itself.
Whether PIN / CAR PASS, Virgin, IMMO OFF, auto programming or clone can be done on this unit depends on the part number, software and immobiliser. Drop us a message before you buy and we will let you know. Description of the options: ECU options.
Questions and answers
| Does 028906021GG fit every diesel Golf? |
|---|
| No. Diesel engines in the Golf had different ECUs – compare the VW and Bosch numbers. |
| Where can I find the numbers? |
| On the label on the ECU casing. |
| How long does it take to prepare the unlocked version? |
| Usually 1–2 working days before dispatch. |
| What condition is the part in? |
| Used, fully working, in good condition. You will find the warranty period in the product features table. |
Please send any questions about matching and options to contact@auto24parts.com.
