Great news mate ur making progress through the DS

I wonder if they tried to disable the egr by unplugging it

Maybe the dpf is blocked so they u, assume the live data will help in telling u the live readings of both sensors either side of the dpf

Indeed amazing how much can be affected when one part is faulty , fingers crossed after fitting a new brake light switch will reduce if not all dts error codes

Plse let us know how u get on and any further info u need I can always look it up for u

Have a great weekend mate

Did find this as well for u ref the red brake light showing if is if appears, of course may not be relative but just in case as it can also sometimes keep that red light on

Fingers crossed it’s just a faulty brake light switch and nothing else

A red brake graphic (all except NAS vehicles) or red BRAKE legend (NAS vehicles), to warn of low brake fluid
level, handbrake on and brake control system failure affecting EBD.

EBD
The EBD function optimises the distribution of hydraulic pressure between the front and rear axles, under all vehicle
load configurations and road conditions, to maintain vehicle stability during braking. EBD operates in forward and
reverse and is automatically enabled whenever the ABS modulator is in the normal braking mode at vehicle
deceleration rates of 0.3 g and above (i.e. medium to high brake pedal loads). EBD operation is similar to that of ABS,
but is calibrated to intervene at lower wheel slip limits and operates the brakes in axle pairs instead of individually.


potential wheel slip situation, it signals the ABS modulator to close the inlet solenoid valve for the brakes of the slower
wheels. This prevents any further increase in hydraulic pressure to those brakes, while allowing the hydraulic pressure
to the brakes on the other axle to increase and so maximise the overall braking effort. If the wheel speeds of the axle
being subjected to EBD control return within the calibrated wheel slip limits, the SLABS ECU signals a stepped
opening of the inlet solenoid valves, which allows a progressive increase of hydraulic pressure to the related brakes.
Operation of EBD is detectable from a stiffening of brake pedal movement as the inlet solenoid valves close and a
slight pulsing of the brake pedal as the inlet solenoid valves open. EBD operation ceases immediately the brake pedal
is released.

The wheel slip limit for EBD operation varies with vehicle speed. During normal operation, the inlet solenoid valves
always operate in axle pairs, with only one axle pair closed at any one time. Since the most lightly loaded wheel during
a braking manoeuvre will usually be the first to reach the slip limit, under most vehicle load configurations and road
conditions EBD control occurs on the trailing axle. However, EBD control can occur on the leading axle or switch
between axles during the braking manoeuvre.

Double post

Yes mate thanks for you help and information always appreciated but still wish you were here, definitely have to replace brake light switch as first action, have removed it it's very stiff and gritty new one should then narrow down codes or maybe clear up although I doubt it Lol
dynamics and abs rely on this signal as you know and remember my 09 threw a total paddy when dynamics was missing a sensor signal with a big knock on effect, also speed restriction mode takes information too you never know
Will investigate further the egr maybe just replace
Just waiting for switch to arrive not same as D3 or D4 its discovery sport 15 on I believe green blue
Will let you know what happens many thanks