ECU 0261S05818 – description
We offer a used, working Bosch ECU for Fiat 500. Its label carries Bosch number 0261S05818 and OEM number 51865081D. We check it in operation before dispatch.
Choosing by number
You choose the ECU for Fiat 500 by the numbers on the label: Bosch 0261S05818 and OEM 51865081D. If your ECU has a different number, it is a different version – do not rely on the model and year alone.
Bosch number and OEM number
- Bosch number: 0261S05818
- OEM number: 51865081D
Virgin Plug & Play – fitting without programming
- No programming: once plugged in, the Virgin version codes itself to the car and immobiliser – as long as the numbers match and the immobiliser works.
- Every ECU is tested on the bench and fitted to our test car before dispatch.
- Cloning on request – free of charge: send us your damaged ECU or its files and we will transfer the data to this unit.
- Warranty: 6 months.
Typical fault symptoms
Look out for:
- rough running, misfires,
- the engine does not start, no spark or no injector control,
- no communication with the ECU during diagnostics,
- no power supply to the ECU although the fuses are fine.
Note: the cause may also be the wiring, power supply or a sensor. A diagnosis before buying will rule this out.
Looking for a different number? See the Fiat engine ECU category or the Bosch manufacturer page.
Frequently asked questions about ECU 0261S05818 51865081D
Is cloning charged?
No, cloning on request is free – just send us the damaged ECU or its files.
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Does ECU 0261S05818 need programming?
No. In the Virgin version, the ECU codes itself to the car and immobiliser. A working immobiliser and matching numbers are required.
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How do I check whether 51865081D fits my Fiat 500?
Look at the sticker on your ECU – both numbers must match: 0261S05818 and 51865081D. The car model is not enough.
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