I have a 2000 Range Rover and emission failed due to the code P0452

SOURCE: 2000 4.6 range rover suv

You require an unlock code/ security code from the dealer. This will consist of 4 numbers. You can then input this code into the door lock to clear imobiliser. You will have to do this every time until you have your remote replaced or repaired. There is a procedure for inputting the code. What the display through the window with the door closed. You need to turn key to unlock or lock (depends on model) until you see the display react to your input. Once this happens you are ready to input the code. If for example the code was 3241 and you have turned it 4 times to the unlock position (most likely) you would start by turning it 3 times to the unlock, 2 times to the lock, 4 times to the
unlock, 1 time to the lock, pause then unlock the car and start the engine. It sounds tricky but once you get the hang of it its not too bad. If when you start to input the code it starts locking and unlocking the central locking is is not accepting the code. The difficult bit is getting it to recognise you are inputting the code. The central locking will do nothing during the code entry. Best doing this when the light is fading as its easier to see the display in the dashboard. Thats it, all you've got to do now is find the code. Often on a card inside the owners service books if still around!!
Good Luck John

SOURCE: online owners manual 2000 land rover range rover hse

Do a serch on Google for RAVE. This is the land rover workshop manuals. The owner manuals are included.
MickyDrew

SOURCE: Hi, 2000 Landrover Freelander 1.8 petrol, failed MOT on CO emissi

check both lambda sensors for breaks in wires and for open circuit on heater side of lambda sensor on the one under the car on the second cat,failed heater element will not heat gas engough for sensor to read causing false readings , also check for slow i.a.c valve on inlet manifold.

SOURCE: 2004 Range rover Check Engine Light

The Range Rover actually has 4 oxygen sensors - 2 in front of the Cat and 2 behind the cat - try to check / replace the other 2

SOURCE: 2004 Range rover hse warning light saying

Bring the car in, I just replaced a transmission last month in an 03