Hi Folks
I have a 2007 SE TD Manual after sitting for a long while due to Lockdown the car is now showing a Transmission fault.
My code reader says its from the differential and gives P 0748 as the code. The interweb says this is an auto box fault.
I have tried to clear the fault but it returns on restarting the engine.
The car drives perfectly and does not go into limp mode.
can anyone make any useful suggestions please.

Probably needs a good run.

Probably due to low battery as you have not used the car for a while.

Leave the car overnight and hopefully the fault will have gone.

Yes I thought the same but I have given it two fifty mile runs and it still has the problem.
I am baffled as to why I have an auto box problem code on a manual.

could be a haldex issue with the rear diff.
Cheap fault code readers can send you on a wild goose chase Jaguar x-type sport gone
Jaguar x-type 2.2d sport one of my best cars ever sadly gone
Freelander 2 GS auto 2008 most unreliable ever ! gladly gone
Freelander 2 GS manual 2013 only time will tell !

P0748 is relates to Pressure Control Solenoid A Electrical - circuit current out of range,

possible cause is "Differential Electronic Module (DEM) internal failure"

recommended action "Clear the DTC and re-test. Check and install a new Differential Electronic Module (DEM) as required"

oldgeezer wrote:

Cheap fault code readers can send you on a wild goose chase

Thanks guys, fault code readers are difficult to trust given that many people recommended different ones.
I can’t remember what mine is called but it only works with Jaguar and Landrover,both companies owned by ford in 2007.
I had replaced the rear suspension arms during lockdown but did not disturb the diff in any way,I hope.

I get this problem trying to clear codes at roadside,try basic eobd to clr codes, works on mercs and others