You are bidding on a used Engine Computer/ECU removed from a 2001 Nissan Sentra GXE with a 1.8L Engine, AUTOMATIC TRANSMISSION, and NO SECURITY.  The Nissan ID Numbers are JA56Q20 B57 and WX 5ZE1WX . Please make sure that if you bid on this ECU, the Unit that you are replacing has exactly the same ID number or is the otherwise compatible. To the best of my knowledge, this ECU will only fit the 2000 2001 and 2002 Sentra XE and GXE with the 1.8L Engine, AUTOMATIC, and No Security. You must do your own due diligence if you wish to employ this ECU on other Sentras.  If your car has an Immobilizer and Chipped Key this Unit can still b used but will have to be reprogrammed, if not simply install as long as the Numbers match. There are no returns if buy the wrong ECU and/or  use it on Sentras that are not compatible with this Unit. Take note that there are several different kinds of 3N Engine Computer. The first 10 characters on the bottom row must match to insure compatibility.  This ECU was removed from an automobile that was wrecked and that had less than 100000 miles on the odometer. The Engine could be started and worked fine. Visually it looks nearly new as can easily be seen by the patina on the metal case. This ECU is Guaranteed to work to your satisfaction. You must be completely satisfied or your purchase price will be refunded. Shipping, packaging, and handling charges are non refundable under any circumstances.   Replace your defective ECU with this Unit right now or simply keep it as a spare. Eventually yours will fail as indicated by a no start condition and if you are stuck and need to purchase an ECU from your friendly Nissan dealer it will set you back well over a Grand.

One last point. All my Sentra Units are opened up and the Circuit Board is carefully examined. I would never buy a Sentra Computer unless the Seller shows you the Circuit Board.  Please refer to the Hi Res Pic which shows the exact Unit you will be receiving. There are no blown or leaky Caps and no browned or  over heated Chips. Everything is visually Perfect. It is suggested that upon receipt of this Unit, you take 5 minutes to open up the Computer and convince yourself of that fact. In the event of returns, please be aware that I will open the Unit to make sure the Board is in exactly the same condition as when it was sent. If it is not, there will be no refunds, the Item will be returned to you, and you will need to pay to get the Circuit Board rebuilt.