P1610 and P1612 on 2002 Pathfinder

[dsurls]

Hello,
Yesterday I had to replace a bad battery in my 2002 Pathfinder. I installed it and everything was fine. I then was able to start the vehicle a couple of times to move it within my driveway in order to work on another vehicle. However, later this evening, I tried to go somewhere and the vehicle would not start. It cranked, but would not start. I used my OBDII tester and discovered trouble codes P1610 and P1612. I also noticed the Security light on the dash being solid while trying to start the vehicle.
I tried the suggestions I've read on the forums for disconnecting the battery for a few hours, and for trying to reset the keys using the on/off cycle 3 times before trying to restart the engine again. I also tried using my other key. Nothing has worked.
Obviously, those codes seem to indicate a problem with the anti-theft system, but the fact that I was able to start the vehicle 3 times since changing the battery has me puzzled. Why would the NATS system have become engaged?
Can someone provide some help so I can avoid a tow and trip to the dealer??

Thanks!

David

[rgk]

Unfortunately it sounds like your key or immobilizer may need reprogramming, or one or the other may be fried.

http://maxima.org/forums/general-maxima ... rking.html

In the past I have heard of people bypassing the security function by using their key to unlock their front door, but I'm not sure whether that is the case here.

[4xq]

Here is a reset procedure I pulled out of an old thread:

A side note: If you try and start the QX4/Pathy and it fails five times in a row due to the NVIS system, it'll go into "lock mode" and you won't be able to start it even with a good key. If you have a scan tool and pull the code P1610, this means you're stuck in lock mode. To reset and get out of lock mode, perform the following steps:

1. Turn ignition switch off.
2. Turn ignition switch on with good key. Do not start engine. Wait 5 seconds.
3. Turn ignition switch off.
4. Repeat steps 2 and 3 twice (total of three cycles).
5. Start the engine.

I haven't used this procedure, but it is worth a try.

Hope it helps out!

[saskapath]

I had a similar experience, no amount of trying to reset the system would help, the imobilizer would no longer recognize the key. Had to have it towed

[chukel]

@saskapath, how was it eventually solved. Having same issue, same codes. All the reset procedures don't work. Do I need to reprogram the key or I need a new immobiliser? How actually is this problem solved.

[saskapath]

The dealer had to reprogram the immobilizer, since that time it has not given me any further problems. That's one piece of useless technology I would happily do without. A 16 year old Pathfinder is hardly a hot target for theft and I worry about the thing failing on some out of the way logging road....

[chukel]

The dealer had to reprogram the immobilizer, since that time it has not given me any further problems. That's one piece of useless technology I would happily do without. A 16 year old Pathfinder is hardly a hot target for theft and I worry about the thing failing on some out of the way logging road....

Thanks for the update. About to order one of these vag obd 2 cables and download Nissan data scan II in order to reprogram my key and resync the immobiliser

[This9hold30]

@chukel we’re you able to find resolve for the codes p1610 and p1612. I am having the same issues and getting run around from my local Nissan dealers.

[chukel]

@chukel we’re you able to find resolve for the codes p1610 and p1612. I am having the same issues and getting run around from my local Nissan dealers.

no. Vehicle is still grounded.

[Recbh]

Hello, I have a Nissan Pathfinder with the same problem. No person able to solve my problem in my city. It ended up totally spoiling my ECU MEC14-315 b1. Did I just buy a MEC14-800 b2 will it work correctly? It was the only one that got the complete kit being of the same vehicle and all the same year. Thank you very much