Citroen Xsara car wont start after driving it the day before

Need more info . Is car turning over ? have you checked basics i.e getting fuel and a spark ?

engine cranking over no spark or fuel

Is the immobiliser light on ? If so , dont know if this might help .

Citroen Xsara immobiliser fault

wont start,turns over but thats it
any help please???

Try this.
Switch ignition ON.
Press and hold lock button for 10 seconds.
Switch ignition OFF.
Wait 3 seconds.
Synchronisation procedure complete.
Source(s):
Autodata

or this ,

Does the remote locking function on the key to lock the doors?
If not reprogramme the key as below:

CITROEN XSARA—XANTIA—SYNERGIE– EVASION - Remote Key Programming

CENTRAL DOOR LOCK (1 BUTTON PLIP KEY)

1. Ensure all doors are unlocked using the key.

2. Press and hold the plip key button until the LED stops flashing.

3. After releasing the button, the LED will light constantly.

4. Press the Plip Button once, and the LED will extinguish.

5. Open the door and hold the Plip key near the Ignition switch, and press the plip button once.

6. Now turn the ignition ON, and wait 10 seconds then turn ignition OFF.

7. After 5 seconds the Plip should now operate.

CENTRAL DOOR LOCK with DEADLOCKING (2 BUTTON PLIP KEY)

1. Ensure all the doors are unlocked using the key.

2. Press and HOLD the large plip key button while the LED flashes continuously for 20 seconds. After 20 seconds press the small deadlock button once while still holding the large button.

3. The LED will stop flashing.

4. Release the large button and the LED will light constantly.

5. Press the large button one time, and the LED will go out.

6. Open the door and hold the Plip key near the Ignition switch, and press the large plip button one time.

7. Now turn the ignition ON, and wait 10 seconds then turn ignition OFF.

8. After 5 seconds the Plip should now operate.

Your car will not start due to a immobiliser fault, This can be caused by any number of things. i suggest you reprogramme the remote fob lock the doors with the fob then unlock and try to start again so the ecu and immobiliser can identify the key. If that doesn't work try a spare key does it do the same?. If after trying the programming the key and trying a spare doesn't work then the next course of action is to have a diagnostic test done to determine the actual cause of the immobiliser fault?

might be the crank position sensor try unplugging and plugging it back in ,pretty common to get poor connections on them ,its on top of the gearbox near the engine

My car won't start... first some details:

Car: Citroen Xsara Picasso 2.0 HDi (04 plate)
Dashboard Error Reading: Electronic Immobiliser Fault

I had been running the car quite happily for at least a month after I bought it (pre-loved) and was very happy with it, then the problems started, I made a run in the car and the whole time the engine was on, the headlights were on, the wipers were set to intermittant wipe and no matter what I did with the switches I couldn't switch any of it off.

When I stopped the car and tried to start it again, I turned the ignition on and the sidelights came on but then when I turned it over it just kept turning over on the starter motor but not igniting the fuel... after a few attempts of this a message popped up on the dash saying "Electronic Immobiliser Fault".

This has happened twice now, the first time I had it recovered to a garage who fiddled with it and said something about the diagnostic equipment picking up a fault in the immobiliser ring inside the ignition barrel but apparently the mechanic "cleaned off an earth lead connection" and then it ran properly but I can't get to speak to said mechanic and I am very confused by the information (or lack thereof) because I have done exactly what was described to me and nothing has worked.

I have arranged for the car to be fitted with a new lockset but the nearest garage that can do it is over 100 miles away and if I can't get it started I can't get it there.

I hope someone can help.