Nissan ECU Up for sale is a Working, in excellent condition 1998 Nissan Maxima / Infinity J30 Engine fuel / engine control module. Part number - See the top or large photo. , This ECU came out of a 98, But my list shows this fits some other year models too, as nissan does not run these entirely by year- may fit some other year models & others too. As always your best bet is to match the part number to the one on your original ECU. These are not at all easy to find, at any price much less as fair as this. These are usually fairly reliable, however can easily be damaged by wiring faults or voltage spikes (caused by a faulty alternator). A faulty ECU can cause problems ranging from a bad idle control circuit to random no injector pulse signal (causes no start or random cut outs) & many others. These are always good to have for diagnostic purposes too, these are extremely expensive to buy new. Comes with a 30 day warranty, see details in the next page. These are located under the plastic piece to the right of the drivers right foot, and to the left of the passengers left foot. Note, that they are not terribly easy to remove.