Hi..Sorry for delay

Depending on the fualt code they got as there are many definitions in regards XXXXX XXXXX sensor problems - they can vary from interupted signal either the sensor or the pick up which the sensor reads - a "wiring fault" maybe more likly from the sensor back to ecu - or a possible timing issue which maybe flaging the fault code up - there is small possibilty the ecu could be at fault but if at all possible if you do have somebody locally that can carry out ecu checks just to be sure it is actually a fault then that maybe the best step forward - if not there are many online ecu repair companys out there if you search google for example and see wether that might be a better option - you will obviously need to remove the ecu itself and send it off in secure packaging "recorded delivery" for testing - some do charge a fee - if another ecu is to fitting then its likly it will need to be recoded to your car and usually this can only be done by a nissan dealer..