My range rover p38 4.6 2002 model could not start.but indicating engine disable ,press remote.what can i do to fix this problem?

There is a sequence of left and right turns of the key in the driver's door that will reset your bECM (Rovers brain) if the following have been tried.
1. Replace batteries in remote and 're-sync by depressing lock button on remote while physically turning and locking the door. Don't release button until locked and key removed. Repeat for unlock button.
2. Disconnect negative/earth cable from battery. While disconnected open driver's door, turn ignition to position 2, return to battery leaving driver's door open and reconnect the negative cable. Proceed to ignition. Turn off completely. Close all doors and hood and attempt starting.
Should both of these methods fail, run a search here on fixya for "engine disabled Range Rover P38" This will take you to step by step instructions on resetting the bECM which I opened this post with. It has been covered many times here, including by myself, no reason to post it again.
Good Luck!

Lock doors with the key. Take out key . Insert key open and close lock 5 times then on the fifth turn open door this will reset the disable code to normal . I had this code on my P38 Range Rover and the Rover Tech assisted me with this simple way to reset the engine disable fault code . Good Luck .

So many problems at the same time indicates that a negative main plug is disconnected from the chassis

1 Check for the "Remote Battery Low" signal message that is displayed on the vehicle's dash once the remote key battery starts to run down. Be sure to replace the battery is before it dies completely. If the battery is dead, it will not be able to start the Range Rover.
2 Buy the correct battery for replacement. Two round CR 2025 batteries are needed. You can purchase them at most major supercenters, camera stores or **** stores. They are a common size and should be readily available.
3 Use a nickel to remove the battery holder on the key remote. Turn the cover until the arrows line up and remove it. The cover fits very tightly and you may need a small screwdriver to pry it off. Remove the battery holder and circular ring from the remote. Take the old batteries out of the battery holder.
4 Place the new batteries in the battery holder. Replace the battery holder and circular ring in the key remote, aligning the arrows. Turn the cover clockwise until it is secure.
5 Resynchronize the key by simply placing the key in the door lock. Lock and unlock the door to the Range Rover and then press the remote control.

Give me some more information about this problem. May be i can help.

SOUND LIKE PROBLEM IN KEY IMMOBILIZER CONTROL MODULE.THIS IS A DEALERSHIP FIX.

The BECM will retain the EKA code, so , charge or replace the battery. Close all doors, windows bonnet etc, then try the EKA code. You must know, that if you enter the incorrect code or do not enter the code correctly by returning the key to the centre position after each turn of the key , more than 3 times, then the system will lock out and you will have to wait 30 minutes to retry. It should start , but it would be good to get another remote handset, Hope that helps

Immobilizer system can be disarmed using 4 digit code from vehicle security card as detailed in owners handbook.

try turning key twice .ie, turn once unlock unalarm back to centre turn twice for imobilser, same for locking.

This car is in super lock mode... when you press remote 2times to lock or when you lock with remote and try to unlock using key manually.

there is a 4 digit number to open the door, its like opening a safe, starting from the left(key in car door) it goes L/R/L/R. so if number code is 1234..... left 1, right 2, left 3, right 4.

or if this too troublesome you can ask landrover dealer to remove the KEYCODE.

happy trying.....
adrian/kk.