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, Audi A4 B6/B7 Bosch 8E0907401D 0281010823
Vendors's code: 0281010823
Product code: 8E0907401D
Barcode:
Code 39:
ISBN:
€101.63
Price
€101.63
€125.00
Price
€125.00
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Engine Control Unit Volkswagen, Audi A4 B6/B7 Bosch 8E0907401D 0281010823
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Does ECU 8E0907401D fit the Audi A4 B6/B7?
It does if your module has number 8E0907401D and Bosch number 0 281 010 823. This is a used, working diesel engine ECU used in the Audi A4 B6/B7 and Volkswagen vehicles.
Engine Control Unit Volkswagen, Audi A4 B6/B7 Bosch 8E0907401D 0281010823
This Bosch engine ECU is assigned to the Audi A4 B6/B7 and Volkswagen vehicles. It has part number 8E0907401D, with a single version letter at the end, and Bosch number 0281010823 – the 0 281 series denotes a diesel ECU. The module manages injection and the running of the engine. We do not state the engine size, so the number decides compatibility. The part is used, in working order and in good condition.
Numbers on the sticker
- 8E0907401D – VW/Audi part number
- 0281010823 – Bosch number, on the label 0 281 010 823
The letter D at the end of the number denotes the software and hardware version. There are many versions under number 8E0907401, so check the full marking.
Symptoms of failure in the A4 B6/B7
- the engine will not start, even though the battery and starter motor are fine,
- no communication with the engine ECU,
- running in limp mode,
- internal module faults after a voltage spike.
Start by checking the connector, earths and fuses – only then suspect the ECU itself. It is also worth reading the fault memory, as the codes stored in the module often show whether the problem lies in the wiring or in the electronics.
Two versions of the ECU
We sell this ECU in a locked or unlocked version. The unlocked unit is prepared before dispatch (usually 1–2 working days). The locked unit has the data and immobiliser of the previous vehicle – it is intended for workshops that will unlock, program and match it themselves.
The possible preparation methods – PIN / CAR PASS, Virgin, IMMO OFF, auto programming, cloning – depend on the number, software and immobiliser. Please ask before buying. Description of the options: ECU preparation options.
Questions and answers
| Will 8E0907401D replace a version with a different letter? |
|---|
| Not without checking – the letter denotes the software and hardware version. |
| Which Volkswagen does the module fit? |
| We do not state the VW model. Compare the number with the label on your ECU. |
| What condition is the part in? |
| It is a used part, in working order and in good condition. You will find the warranty period in the product features table. |
Questions about the A4 B6/B7? Email contact@auto24parts.com.
