Sport RRS Lots of error codes help

Hi all fairly new to this site and to owning a Range Rover

I recently bought a RRs 2.7 TDv6
I have had the left hand head gasket replaced, left hand egr replaced, new map sensor, replaced a rear light (genuine LR) car is a late 2008

I bought this car 2 months ago and I drove 80+ miles home to find the coolant tank bubbling, diagnosed failed headgasket and replaced it and did belts etc at the same time. but since doing the above has now given me hundreds of error codes.
I get an engine system failure warning when I hard accelerate. ( has been smoke tested and any leaks fixed but still does this, fractionally less than it did)
I now have a judder in the garbox, this isn't noticeable when cold but is very noticeable when the car has warmed up. its around 3000revs doing 30/40 mph or 70mph on a motor way.
I suspect its the torque converter & control module as has been suggested to me by a gearbox specialist.

I have the following error codes as of last night showing in the car :
steering column module : b1b70 - local interconnection network bus circuit 2 , b1do1- right low beam circuit, b1d06- left turn signal circuit, b1d07- right turn signal circuit
body control module : b1b70 - local interconnection network bus circuit 2, b1do1- right low beam circuit
instrument pack : u0132 - lost communication with ride level control module, U0159 - lost communication with parking assist control module
parking break : u0100 - lost communication with engine control module/powertrain control module A
Auto transmission: u2023 - control module network signal calibration data
Engine codes : p123a - barometric pressure - turbo charger/ supercharger boost correlation sensor A, p023d - manifold absolute pressure - turbo charger/ super charger boost sensor A correlation, p0489 - exhaust gas recirculation control bank "A" circuit low
U0416 - invalid data received from vehicle dynamics control module.
All terrain control module : u0401 - invalid data received from engine control module / powertrain control module , u0402 - invalid data received from transmission control module , u0416 - invalid data received from vehicle dynamics control module.

I don't know if I should focus on the boost problem first or the gearbox problem or the error codes ? or just take a match to it

any help would be very much appreciated.

Welcome. In this situation, the match is best accompanied by a can of petrol
@gstuart is this the Disco , you know so well?

What is your battery voltage standing and with engine running at 2k rpm lights heater ect on.

battery is main cause of multiple faults but also reset steering angle and check alternator for the diodes packing up

brianp38dse said:

What is your battery voltage standing and with engine running at 2k rpm lights heater ect on.

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brianp38dse said:

What is your battery voltage standing and with engine running at 2k rpm lights heater ect on.

Click to expand...

From memory when I checked the battery voltage was - 12.4 & running was 13.9

ovalandrover said:

battery is main cause of multiple faults but also reset steering angle and check alternator for the diodes packing up

Click to expand...

Will check these at the weekend!

13.9 volts running is low should be nearer 14.8 and up .

brianp38dse said:

13.9 volts running is low should be nearer 14.8 and up .

Click to expand...

As above^^^^^^ they need lots of volts to work correctly due to poor design of the electronics.

You also need to get it on dedicated diagnostics and clear all historical codes

Wet boot area and panel humidity can also add to signal interference? Id go over everything that has been done to check for loose electronic plugs and battery terminals as well.