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.
ABS pump and control module Alfa Romeo Bosch 0265225268 51721792 0265950183
Vendors's code: 51721792
Product code: 0265225268
Barcode:
Code 39:
ISBN:
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ABS not working in your Alfa - do numbers 0265225268 and 0265950183 match?
Go from symptoms to comparing numbers: 0265225268, 51721792, 0265950183. The unit is used, in working order and original.
Alfa Romeo: ABS unit 0265225268 with number 0265950183 - from symptom to number
Several listings share the same start of their numbers and differ at the end. Here the distinguishing feature is the third number: 0265950183. It is for the Alfa Romeo make. We do not state the model - selection is by part numbers. The route to the right part: describe the symptoms, read the codes from the tester, check the simple components and, last of all, compare the numbers. The unit is used, in working order, original.
What to compare at the end
- 0265225268 - Bosch number: 0265225268
- 51721792 - part number (OEM): 51721792
- 0265950183 - Bosch number: 0265950183
The first two numbers (0265225268 and 51721792) may also appear in other listings. The variant is decided by 0265950183, so give it the most attention. We do not assign the role of pump or control module to the numbers.
Where the starting point lies
The unit comes into play if you notice:
- an ABS warning light that stays on,
- a module fault that returns despite being cleared,
- worrying pump behaviour after the car is started,
- no response from the ABS control module in the test.
First the tester and reading the fault codes. Then the wheel sensors, connectors and fuses. If these components are in order, go back to the list of numbers. After fitting the unit, bleed the brake system. Coding, if needed, will be done by the workshop.
Clearing up doubts
| How does this listing differ from the one with 0265950121? |
|---|
| By the third number. Here it is 0265950183, there 0265950121. |
| Which numbers are from Bosch? |
| Those beginning with 0265. We give the number 51721792 as a part number (OEM). |
| Can I buy knowing only the first number? |
| It is better to check all three, because the first is sometimes shared by several variants. |
| Do you state the Alfa model? |
| No, in this listing selection is by part numbers. |
Send us the three numbers from your part - we will check whether they match the items on the list.