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Old 01-12-2009, 02:15 PM   #1 (permalink)
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Default Fault Code P1668

Had this code stored P1668.

I googled it and it came back:

P1668 = Anti-Theft Alarm serial link faultDrive cycle A:Signal out of range - above maximum

Does this sound right?
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Old 01-12-2009, 02:16 PM   #2 (permalink)
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I can't find that code in my sheets,
Sorry.
Mike
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Old 01-12-2009, 02:17 PM   #3 (permalink)
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I would love to help you, but I still haven't seen pictures of your ass!
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Old 01-12-2009, 02:33 PM   #4 (permalink)
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Quote:
Originally Posted by Elemental View Post
I would love to help you, but I still haven't seen pictures of your ass!
Posted to the appropriate thread!

The truck is running fine, just had the odbII reader and found a fault code stored...
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Old 01-12-2009, 02:36 PM   #5 (permalink)
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Quote:
Originally Posted by LandyII View Post
Posted to the appropriate thread!
No that was the wrong thread and we don't condone posting pornographic pictures of sea creatures, sheep and goats fine but leave shamu out of it
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Old 01-12-2009, 02:43 PM   #6 (permalink)
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Quote:
Originally Posted by ArmyRover View Post
No that was the wrong thread and we don't condone posting pornographic pictures of sea creatures, sheep and goats fine but leave shamu out of it
I posted to the appropriate thread! ;-)
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Old 01-12-2009, 02:44 PM   #7 (permalink)
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Now, about that fault code! I'm being told it's a Land Rover Dealer Code
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Old 01-12-2009, 02:59 PM   #8 (permalink)
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Don't sweat it. With supalock (or whatever it's called) if you click twice to lock the truck and only once to re-open, it'll pop the doors but leave the alarm armed. Try clicking twice, or when you get in, make sure your alarm armed red LED isn't still flashing. Mine does the same, reset the code and double click to get in and it hasn't come back. Gary
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Old 01-12-2009, 03:03 PM   #9 (permalink)
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Quote:
Originally Posted by Britabroad View Post
Don't sweat it. With supalock (or whatever it's called) if you click twice to lock the truck and only once to re-open, it'll pop the doors but leave the alarm armed. Try clicking twice, or when you get in, make sure your alarm armed red LED isn't still flashing. Mine does the same, reset the code and double click to get in and it hasn't come back. Gary
Ahhhh, I remember having the dealer program it so that when I pressed the unlock button that all my buttons don't fly open. A lady can't be too careful these days and why open all your doors if you don't have to! When I click once, only the drivers side opens!

Prolly has something to do wit dat!

Thanks Britabroad
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Old 01-12-2009, 03:14 PM   #10 (permalink)
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Quote:
Originally Posted by Disco Mike View Post
I can't find that code in my sheets,
Sorry.
Mike
Thanks for checking Mike!
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Old 01-12-2009, 03:30 PM   #11 (permalink)
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Found more info on Fault Code P1668:

Failure to Start - "Passive Immobilization" Enabled

AFFECTED VEHICLE RANGE:

Discovery Series II (LT) All

SITUATION:

VEHICLE MAY NOT CRANK AFTER BEING UNLOCKED

The customer may complain that occasionally the vehicle will not crank. This may be because the Non-NAS Passive Immobilization feature has been accidentally turned on in production or during repair operations.

If Passive Immobilization is enabled, the vehicle will immobilize itself if the ignition key is not turned to position "II" or the engine is not started within 30 seconds of unlocking the vehicle. With the ignition key in position "II", the vehicle will show that it is in the immobilized state by illuminating the alarm LED continuously. The engine will not crank if the ignition key is turned in an attempt to start the engine.

RESOLUTION:

REPLACE BCU WITH NEW OR RE-PROGRAMMED UNIT

To turn off the Passive Immobilization feature, replace the BCU with a new unit ensuring that the proper installation procedure is followed. Alternatively, after contacting the LRNA HelpLine send the original BCU to Land Rover to be re-programmed and install the re-programmed unit ensuring that the proper installation procedure is followed.

PARTS INFORMATION:

YWC000310 BCU

WARRANTY CLAIMS:

86.55.75 Time 0.50 hrs.
Install new or re-programmed BCU

FAULT CODE: A

Normal warranty policy and procedures apply

REPAIR PROCEDURE

SYMPTOM VERIFICATION OF ACTIVATED PASSIVE IMMOBILIZATION

1. Unlock the vehicle and wait one minute.

2. With the ignition off, verify that the anti-theft alarm LED in the instrument pack blinks slowly.

3. Turn the ignition key to position "II" and verify the alarm LED is on continuously. This indicates an immobilized condition.

4. Check that Passive Immobilization is on by attempting to start the vehicle with the LED on continuously.

5. If the vehicle does not start, confirm that Passive Immobilization is turned on as follows:

^ Turn off ignition and remove the key.

^ Press the unlock button on the plip once.

^ Attempt to restart the vehicle within 30 seconds.

^ If the vehicle starts normally, Passive Immobilization is activated. The BCU must be replaced or reprogrammed by Land Rover after contacting the LRNA HelpLine.



TESTBOOK VERIFICATION OF ACTIVATED "PASSIVE IMMOBILIZATION"

NOTE: The Bosch Engine Management ECU may flag a P1668 Fault Code if an attempt to start the vehicle is made when Passive Immobilization is activated. This will only be evident by interrogating the Bosch Engine Management ECU with TestBook. The fault will not turn on the Check Engine (MIL) lamp.

1. Using TestBook, verify Passive Immobilization is enabled as follows:

^ Select Vehicle Configuration.

^ Select Dealer Configuration.

^ Select "CLASS" (Corporate Locking and Alarm Security Strategy).

^ Note the status of Passive Immobilization.


2. If Passive Immobilization shows "Disabled" the setting is correct for North American vehicles and the no-start/no-crank condition has another cause.

3. If Passive Immobilization shows "Enabled" the BCU must be replaced to provide the customer with the standard North American configuration. Two options are available:

^ Return BCU to Land Rover for reprogramming and install the reprogrammed BCU with proper menu selections.

^ Install a new BCU from parts inventory and install with proper menu selections as outlined in TIB 86/03/01/NAS.


4. Call the Land Rover Technical HelpLine for approval before you replace a BCU or ship a BCU to Land Rover.


OPTION 1: RE-PROGRAM EXISTING BCU TO TURN OFF PASSIVE IMMOBILIZATION

NOTE: Because the "Passive Immobilization" is a security-related feature, there is no way to turn off this feature with TestBook. Land Rover has the ability to perform this function using special software. Land Rover will FedEx the BCU back to the retailer on the day received.

1. Verify that the ignition switch is in the OFF position.

CAUTION: The negative cable removal must be performed within 30 seconds of pressing the plip button.

2. Perform the following steps within 30 seconds:

^ Press the unlock button on the plip.

^ Immediately remove the negative battery cable from the battery.


3. Refer to the Workshop Manual and remove the BCU from the vehicle.

4. Send the BCU via FedEx to Land Rover North America Inc. for reprogramming and return.

5. Refer to the Workshop Manual and install the re-programmed BCU.


OPTION 2: INSTALL NEW BCU TO TURN OFF PASSIVE IMMOBILIZATION

CAUTION: When installing a new BCU, the default is "Passive Armed." Failing to follow the BCU installation/replacement process correctly could cause Passive Immobilization to be turned on again.

1. Refer to the Workshop Manual and install a new BCU.

2. Refer to TIB 86/03/01/NAS and follow the installation/replacement procedure carefully to ensure that the BCU is installed correctly and that "Passive" is turned OFF.
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Old 01-12-2009, 03:58 PM   #12 (permalink)
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Where di dyou get that?
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Old 01-12-2009, 04:02 PM   #13 (permalink)
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Quote:
Originally Posted by Elemental View Post
Where di dyou get that?
C/c/p from DiscoWeb = it was a TSB
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Old 01-12-2009, 04:37 PM   #14 (permalink)
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nice. I was too busy distracted with the other 71 TSB to find that one! Actually, sounds more like a feature than a problem Say you get in a tiff.. just unlock the doors and be like.. yea.. try and drive away. I'm not telling my secret! hehe
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Old 01-12-2009, 04:44 PM   #15 (permalink)
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Quote:
Originally Posted by DINOKLR View Post
nice. I was too busy distracted with the other 71 TSB to find that one! Actually, sounds more like a feature than a problem Say you get in a tiff.. just unlock the doors and be like.. yea.. try and drive away. I'm not telling my secret! hehe
Actually, the car will start after about the third turn over so now I'm trying to decide if I should get the crank case sensor (CKP)

Someone nice bought me one for Christmas but it was the wrong model, so I returned it.....

Hummmm, wonder if I should reorder it and slap it on there anyway

I'm open to suggestions
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