Discovery 5 DTC on camshaft sensor - timing chain replacement?

The engine light appeared on my Land Rover Discovery (2018) accompanied by an atypical engine sound. I took it to the garage and they noted that it was consuming excessive oil. They assessed it and initially warned that the timing chain or the entire engine may need to be replaced. They then sent the following recommendation:

We checked the defaults in the car and there was a DTC on the camshaft sensor, which is not working as it should be. That is why the engine light was on and it runs irregularly. The sound you hear is the timing chain.

We topped up the oil in the car, so it is using more oil than it should be. Because this is the second time it could be that there is some wear in the engine.

Our advice is to start with replacing the timing chain, camshaft sensors, and the NOx sensor.

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I'm still awaiting a quote for this, but does anyone have any experience in this, or should I consider a second opinion? Should I ask what the DTC code is?

NeoX said:

Should I ask what the DTC code is?

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Yes, you definitely should or get a second opinion anyway cos they seem to be confused if it's a belt or a chain

They assessed it and initially warned that the timing belt.......

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then

Our advice to start with replacing the timing chain,

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I would assume the DTC is for camshaft/cam chain out of phase, i.e. the chain is worn
if the engine is the 2 L have a Google for Ingenium chain wear

sierrafery said:

Yes, you definitely should or get a second opinion anyway cos they seem to be confused if it's a belt or a chain


then

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I have requested the DTC code from them. I expect I will have it later today.

I also suspect that was my error mentioning the timing belt. I corrected it a few minutes after you edited your message (before I saw it).

So, I'll see where they say and update here later.

I've received the DTC code - it is P0341-91 which I understand is the camshaft position (CMP) sensor A. So, would their advice to replace the timing chain, camshaft sensors, and the NOx sensor be appropriate?

NeoX said:

So, would their advice to replace the timing chain, camshaft sensors, and the NOx sensor be appropriate?

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I'd say that it's a bit too much, here is what LR sais about that code in the WSM

NeoX said:

I've received the DTC code - it is P0341-91 which I understand is the camshaft position (CMP) sensor A. So, would their advice to replace the timing chain, camshaft sensors, and the NOx sensor be appropriate?

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Speak to MDRS Automotive, they seem so to lots of the ingenium motors with timing chain issues.

sierrafery said:

I'd say that it's a bit too much, here is what LR sais about that code in the WSM

View attachment 325440

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Thanks for that. I take it this document is not in the public domain as I can't find it anywhere online? Reason being, I'm in the Netherlands, and I expect the Dutch garages use a Dutch version of this document. English is fine if I present it to them, but I'd need to know the name of the document and exactly what vehicle(s) it applies to as I understand the action can be different for different vehicles with the same DTC code. If you could help out with this, that would be very much appreciated.

Judging from the garage's email, I believe they recommended replacing the timing chain because of the noise that was reported when the oil was low. I'm not sure how they checked this, though.

lynall said:

Speak to MDRS Automotive, they seem so to lots of the ingenium motors with timing chain issues.

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I'm based in the Netherlands. While it is potentially possible to take the Land Rover over to the northeast of the UK (as I go to London every week anyway, but normally by plane), it would be easier if I can deal with it locally. Are MDRS Automotive active on this forum by any chance - perhaps I could email them to have a look at this thread?

Breakdown today​

Perhaps unrelated, but my car broke down today. It kept stalling when I stopped at traffic lights and would only restart with throttle applied which was accompanied by a knocking sound which stopped once the engine was running. The mechanic said that the throttle mixture may be faulty - he was unable to access it in the engine as it's encased. I therefore had the car towed to the garage and I'll be contacting them tomorrow to get everything fixed.

I also told the roadside assistance mechanic about the timing chain and high oil consumption issue, and he suggested that the high oil consumption could be due to worn pistons or something else in the engine - and that this may require an engine rebuild to fix. He said that the low oil may have just revealed the timing chain issue by causing the noise due to it being slightly loose from being worn and therefore slightly elongated.

Any theories on the above would be much appreciated before I compose my email to the Land Rover garage.

NeoX said:

Thanks for that. I take it this document is not in the public domain as I can't find it anywhere online?

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That screenshot is from the LR workshop manual which is available through Topix but you have to be registered https://topix.landrover.jlrext.com/topix/vehicle/lookupForm ... you didnt say the exact engine type so i presumed it's the most common of them... it's from this doc

It's certainly an Ingenium 2L diesel, so I suspect the 'I4' is correct then. Thanks.

This is the email I've drafted so far:

Unfortunately, the car broke down today. It kept stalling when I stopped at traffic lights and would only restart with throttle applied which was accompanied by a knocking sound which stopped once the engine was running. The car was towed away, and it will be brought to you this week.

So, there appears to be four problems:

1. High oil consumption.
2. DTC P0341-91 – camshaft position (CMP) sensor A. I assume this is unrelated to the timing chain issue, but it is what caused the engine light to come on, correct?
3. Timing chain – I take it this was apparent due to the low oil. How were you able to determine it was the timing chain? Did you check it for wear?
4. Stalling of the engine when idle.

Would I be correct in assuming that all four problems are unrelated to each other?

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Reasonable email?