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 Audi Bosch EDC17CP44 4L2910401C 0281018302
Vendors's code: 0281018302
Product code: 4L2910401C
Barcode:
Code 39:
ISBN:
€813.01
Price
€813.01
€1,000.00
Price
€1,000.00
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Engine control unit Audi Bosch EDC17CP44 4L2910401C 0281018302
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How do you check whether control unit 4L2910401C will fit?
Used, working Bosch engine control unit 0281018302 (VAG number 4L2910401C) for diesel engines, for Audi. Match it by the numbers on the housing – you choose the locked or unlocked version when ordering.
Engine control unit 0281018302 – Audi
A failing control unit usually shows up as starting or running problems. A used, working unit 0281018302 (4L2910401C) for diesel engines is one way to restore proper operation for Audi.
Part numbers to compare
- 0 281 018 302 / 0281018302 – Manufacturer part number (Bosch)
- 4L2 910 401 C / 4L2910401C – VAG group part number
- EDC17CP44 – Controller type / family
You will find the numbers on a sticker or print on the control unit housing. 0281018302 is the manufacturer number (Bosch), 4L2910401C the VAG number; either one is enough for comparison.
When does an engine control unit start causing trouble?
Typical symptoms are hard or no starting, an engine warning light, limp mode, no communication with diagnostics and injection system errors. Before replacing the unit, check the power supply, grounds, fuses and wiring – the control unit is not always the cause.
Locked or unlocked version?
A locked unit still carries the data and immobiliser of the previous car – it suits workshops that unlock, program and match the part themselves. We prepare an unlocked unit before dispatch (about 1–2 working days). Not every unlocking method is available for every unit – it depends on the number, software and immobiliser, so ask before buying if in doubt. Details: engine ECU preparation options.
Questions about this control unit
| Is 0281018302 the same as 4L2910401C? | They are two numbers of the same part: 0281018302 was assigned by the manufacturer (Bosch), while 4L2910401C is the VAG group number. The housing usually shows both, and one of them is enough for comparison. |
| Does the control unit need coding after replacement? | Usually yes – the unit works together with the immobiliser and the vehicle, so it often needs matching. A locked unit comes with the data of the previous car, an unlocked one is prepared by us before dispatch. |
| What does EDC17CP44 mean? | EDC (Electronic Diesel Control) is Bosch’s family of diesel engine control units; EDC17CP44 is the exact type that helps you pick the right version. |
Not sure about the number? Send a photo of the label to contact@auto24parts.com. More units are in the categories engine control units for Audi and engine control units.
