DEF and NOX sensor trouble

Engine, Exhaust, Drivetrain, ECU Faults and Fixes
chrisjp
Posts: 362
Joined: Sun Dec 24, 2017 5:11 pm
Location: Seascale, Cumbria

Re: DEF and NOX sensor trouble

Post by chrisjp » Sat Jul 17, 2021 4:30 pm

BOBCDP wrote:
Sat Jul 17, 2021 11:40 am
Fighterpilot wrote:
Sat Jul 17, 2021 8:41 am
I agree with Wastegate84. They are guessing as to what is wrong. To save money go elsewhere as the CC will fetch good money when removed to someone. I hate guesswork diagnostics. All through the manual JLR state substitution of parts should not be done in fault detection and to use the correct diagnostic equipment.

Have a look though this Mongoose diagnostics info: https://www.jlridssddmongoose.com/home/ ... -usb-16gb/

It would appear that the system they use is called SDD ( Symptom Driven Diagnostics). For accuracy it depends on ALL the end user reported symptoms being fed in to the computer by the technician. It will then spew out the most likely cause of the problem and how to fix it. Have you ever spoken to a technician when initially booking your car in at a dealer? Of course not. It's a very pleasant receptionist who jots down a few notes which then get passed on. It's no wonder they often get it wrong!!
Well all praise to Lloyd Jaguar in Carlisle. When I took my XE in for some warranty work the receptionist actually went and got the technician to come from the workshop and discuss the issue with me. He then fixed it and when I picked the car up he again spoke with me to tell me what he'd done. Incidentally, this must also increase job satisfaction for technicians.
So not all Jag dealerships are poor, it seems, but JLR do need to root out the poor ones or somehow incentivise them to improve.
Chris Phillips. Jaguar XE HSE 250PS Petrol MY20. Portofino Blue, Light Oyster, privacy glass, heated steering wheel, Meridian 825w, space saver spare wheel, folding rear seat, black pack, 16-way driver seat

Dash.BD
Posts: 11
Joined: Wed Jul 14, 2021 4:54 pm
Location: United Kingdom

Re: DEF and NOX sensor trouble

Post by Dash.BD » Sun Jul 18, 2021 9:39 am

Fighterpilot wrote:
Sat Jul 17, 2021 3:34 pm
I spoke too soon my wife is spiking a temp of 39C and I think we are going to A&E very soon.
Sorry to hear that, hope she is ok?

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Fighterpilot
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Joined: Sun Aug 16, 2020 10:48 am
Location: NW

Re: DEF and NOX sensor trouble

Post by Fighterpilot » Sun Jul 18, 2021 9:42 am

Thanks for your reply. Later in the day it came down to 38.3C then lower again to 37.8C and today normal. Very weird but she has an emergency GP phone consultation and possibly blood tests.
R Sport 180D 2015

Dash.BD
Posts: 11
Joined: Wed Jul 14, 2021 4:54 pm
Location: United Kingdom

Re: DEF and NOX sensor trouble

Post by Dash.BD » Mon Jul 19, 2021 1:32 pm

So dealerships says its the DEF filter and oil leak has been traced to a blanking cap. Warranty garage have agreed to pay for the work.

Still slightly concerned there may be something else that's being missed but that might just be that may trust in the car has been rattled.

Dash.BD
Posts: 11
Joined: Wed Jul 14, 2021 4:54 pm
Location: United Kingdom

Re: DEF and NOX sensor trouble

Post by Dash.BD » Mon Jul 19, 2021 7:14 pm

Fighterpilot wrote:
Sun Jul 18, 2021 9:42 am
Thanks for your reply. Later in the day it came down to 38.3C then lower again to 37.8C and today normal. Very weird but she has an emergency GP phone consultation and possibly blood tests.
Fingers crossed it's nothing to serious. There are a few bugs the doing the rounds besides covid, they are being blamed on lower immunity due to lack of socialising apparently.

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Fighterpilot
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Location: NW

Re: DEF and NOX sensor trouble

Post by Fighterpilot » Tue Jul 20, 2021 7:59 am

All fine. It passed quickly but she is having a Covid lab test done anyway. A Dr called her Sunday to see how she was. By then the temp had gone and Monday our surgery contacted her to make sure she was OK as well. I must say I was impressed with the way she was treated as the Dr on Sunday spent 30 minutes asking various questions.
R Sport 180D 2015

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