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 Citroën Bosch 0265251497 9660934580 0265951427
Vendors's code: 0265251497
Product code: 0265951427
Barcode:
Code 39:
ISBN:
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How to check whether ABS pump 0265251497 fits your Citroën
Used original ABS module with number 0265251497 for Citroën. Confirm compatibility with the number from your original pump.
How to identify ABS pump 0265251497 for your Citroën
The hydraulic block and control unit of this ABS pump form a single module that works with the wheel speed sensors in Citroën cars. You will find number 0265251497 on the label, and the full set of numbers is given in the description below. The listing does not state the car model or year, so we do not give them here and match the part by its numbers.
Numbers to compare
The numbers from the listing, as written on the labels and as a single string:
- 9660934580, original Citroën number,
- 0 265 251 497 (catalogue format: 0265251497), hydraulic block manufacturer's number,
- 0 265 951 427 (catalogue format: 0265951427), control unit number.
The full numbers matter, including their endings. If in doubt, send us a photo of your pump.
Symptoms of a faulty ABS pump or control unit
- the ABS stops working, although basic braking usually remains functional,
- the brake pedal pulses or feels uneven for no obvious reason,
- the ABS activates for no reason during normal braking,
- on a slippery surface the wheels lock up noticeably sooner than they used to.
First check the wheel sensors, their wiring and the supply voltage. Only a fault code pointing to the module justifies replacing the pump. After fitting, clear the fault codes and, if necessary, bleed the brake system.
Questions and answers
| Which car model does this pump fit? |
|---|
| The listing does not state a model or year, so confirm compatibility with the number from the original pump in your car, or send us a photo of it. |
| Are the pump and the control unit sold separately? |
| In this listing they are a single module: a hydraulic block with the pump and valves, with the control unit attached to it. |
| Who makes this module? |
| The module is made by Bosch. The manufacturer's name does not change the numbers you should use to match the part. |
| What condition is this ABS module in? |
| It is an original recycled part in good condition, checked by us. Warranty details are in the product features table. |
Want to check before you buy? Send a photo of the block and sticker on your ABS pump and we will check that the numbers match.