RED WARNING LIGHT - Land Rover Discovery Sport 2020

I was driving along a main road and goung around 15 mph. i went over a large puddle along the edge of the road and then after 1 minute the red warning light came on. The car then would not drive over 25 mph and messgae in the picture below came on. luckly i was around the corner from my house. After 5 hours i went and took it for a drive up the road. At first there were no lights on the dashboard and then the Red warning light came on again and this time the amber engine management light also appeared. land rover cannot see me for 3 weeks. can anyone let me know what the problem is as i'm worried it is the end of my car. Also, will my warranty cover the issue?

The AA have been and these are the codes it shows

DIT said:

I was driving along a main road and goung around 15 mph. i went over a large puddle along the edge of the road and then after 1 minute the red warning light came on. The car then would not drive over 25 mph and messgae in the picture below came on. luckly i was around the corner from my house. After 5 hours i went and took it for a drive up the road. At first there were no lights on the dashboard and then the Red warning light came on again and this time the amber engine management light also appeared. land rover cannot see me for 3 weeks. can anyone let me know what the problem is as i'm worried it is the end of my car. Also, will my warranty cover the issue?

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Telling us what vehicle it is might help.

Sorry Land Rover Discovery Sport 2020

DIT said:

Sorry Land Rover Discovery Sport 2020

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Ok. Kind of guessed that by looking at the photo. Out of my league I’m afraid, but If you plan on keeping it, I would recommend you invest in a decent diagnostic tool. The first thing LR will do is plug it in and charge you £££ for it. If it is water related, it’s a sad day when a Land Rover can’t go through a puddle without encountering an electrical problem !!

Of course, it depends upon the size of puddle and how fast you hit it - if the puddle is even relevant. As mentioned above, you do need to do some basic checks and a code read first, although it should be covered by even the most basic aftermarket warranty. As a general rule, amber warnings are a caution, red warnings are a stop when safe to do so.
Do you have any breakdown assistance cover? They could at least read the fault codes for you, maybe even fix it if its something simple like a saturated air filter or a loose air intake or charge air hose.

With an older non computer vehicle splashing through a deep puddle will often cause the charge warning lamp to come on. After a bit it dry's out and works again as normal.
Likely your ECU will record this sort of thing as a fault. Progress so they say.
Also outside my league but second @meego comments above.

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Graculus said:

Of course, it depends upon the size of puddle and how fast you hit it - if the puddle is even relevant. As mentioned above, you do need to do some basic checks and a code read first, although it should be covered by even the most basic aftermarket warranty. As a general rule, amber warnings are a caution, red warnings are a stop when safe to do so.
Do you have any breakdown assistance cover? They could at least read the fault codes for you, maybe even fix it if its something simple like a saturated air filter or a loose air intake or charge air hose.

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thank you

i have called the AA to see if they can plug their machine in to tell me what the problem is

DIT said:

thank you

i have called the AA to see if they can plug their machine in to tell me what the problem is

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Good thinking. I would still consider a diagnostic tool though. Nanocom is the biz, but expensive and only covers one vehicle out the wrapper. There are others and it’s a widely discussed topic though. It might sit on the shelf for months, but it’s a godsend when you need it !!!

See my local JLR want around £400 plus vat to just plug a scanner in

like many of us am so pleased I have my own scanner , other key factors issaving a fortune , huge convenience in not having to wait for an appointment, being able to turn the keyless entry off if so required , then things like service light rest and multiple other advantages , the newer the vehicle it seems the better scanner that u need

meego said:

it’s a sad day when a Land Rover can’t go through a puddle without encountering an electrical problem !!

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He didn't even go through it, he went over it


Sorry couldn't resist

In response to the updated original post, charge air pressure is after the turbo and generally (with the lack of other positional errors from the turbo actuator) indicates a charge air leak. The NOx DTC is most likely a consequential error and would only put the amber EML warning on the dash, the lack of boost pressure is the one putting the red 'restricted performance' warning on.

Not sure why water would affect it unless it got into a connector or the PCM, unlikely.
The N0x sensors are on the exhaust. There is one in the centre right underneath the car which is reasonably accessible.
Maybe worth checking this for water in connector.
Total guess but does it have Ad Blue and could water have got into it ?
I assume you taking it back to supplying garage ?