ECM-A610
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I was driving V50 2011 with new injector for some time without any issues as well. Coded the injectors at some point, but haven`t seen any difference. For some cars/platforms it seems to be mandatory for normal functionality, but not sure if this is a must for the P1 platform.
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@wenger did you use new or rebuild / remanufactored injectors and the correct parts? Here https://d5t5.com/article/volvo_diesel_injectors you can find some info regarding injector coding.