Restricted Performance 2014 Freelander 2

I can see several threads on this topic, all each with slightly different situations and manifestations, so if it's OK with the mods can I ask about it again but with how it showed itself to me?

Warning (ie exclamation mark in triangle) top right of display and big version in centre of display on dash with "restricted performance" message. Nothing else except press OK to clear possibility.
Started today - country roads and up/down gentle meandering little hills about 40mph and later after 1 hour after doing 50-70mph and had been switched off after the dual carriageway.
Once appeared it would only disappear if I pulled over and switched off. Half the time I re-started it disappeared, half the time it reappeared. Sometimes reappeared after 5 mins driving from switching on, a couple of times reappeared 20 mins later, and a couple of times immediately on ignition after it had already been on when I had pulled over to switch off.
I'm not sure if there was a loss of power or not on a couple of occasions - I feel there was, but I was also driving on a steady hill and being very cautious. On final leg home there was definitely no loss of power and the message was on for 30 mins driving at 30-45mph.
When I got back after driving for 30 mins with the message on the whole way, I switched off, jumped out to open the gate, started ignition and message had disappeared.
No symptoms of anything else wrong.

I'm asking for ideas of what could be causing such an intermittent problem and how I could find out without having to take it to anyone (yet). I've seen mention of various kit and instruments which posters are using - what are these? Some posters talk of error codes and clearing them - how can I see the error codes and what exactly is clearing them, and how? Anything (simple..) manually I could check?

Is it safe to drive with this message on with the above as today's experience?

You need a suitable diagnostic reader to get the codes. The codes may or may not tell you exactly what the issue is, but will normally give clues as to where the issue might lie.

I did some basic diagnostics and then took it to a garage who discovered what the problem was - a worn bit of pipe with a big tear in it. Replaced, problem solved!

Meerkat1234 said:

I did some basic diagnostics and then took it to a garage who discovered what the problem was - a worn bit of pipe with a big tear in it. Replaced, problem solved!

Click to expand...

Any particular pipe? I'm guessing a boost hose had split. If so it's best to replace all 4, as the others won't be far behind.

Ah, now you're asking. I can't remember the name of the hose but it's about a 1.5 hand lengths, slight curve, made of a kind of rubber-like material full of meshing I think.

Will the others be close behind because they're likely to be the same age, or because of the failure of this one?

Meerkat1234 said:

Ah, now you're asking. I can't remember the name of the hose but it's about a 1.5 hand lengths, slight curve, made of a kind of rubber-like material full of meshing I think.

Will the others be close behind because they're likely to be the same age, or because of the failure of this one?

Click to expand...

If the hose was about 80mm in diameter, then it'll be a boost hose.

They fail due to age, oil and fatigue, so if one fails, the rest will eventually do the same. I've replaced all mine with silicone because it lasted longer, although the originals lasted 11 years, and I doubt the vehicle will reach 22 years in my ownership.

Just googled and I think it was the intercooler hose.