Just had the codes read on my new-to-me 4.4 tdv8.


It had 31 error codes when he first plugged it in so cleared them and then drove 2 miles and scanned again:

Speed Control Module
U0421-81 Invalid data received from ride level control module

Powertrain Control Module
P040D-00 Exhaust gas recirculation temperature sensor A - circuit high

Ride Level Control Module
C1A36-01 Exhaust Valve

He's going to price up the required parts and pending more investigation, will order and replace.

In the meantime, can anyone tell me if any of these are serious or perhaps indicators of a problem?

Want to be going to the dealer/trader with the best information possible![/b] 2011 4.4 TDV8 Vogue SE - 'Black Betty'
2000 4.0 P38 HSE - 'Green Goblin' - Gone.
Audi..Mini..BMW..

Lots about P040D on here. Most independent specialist will be able to change the sensor quote easily. It's a swine of a job. Lots of arguments that it doesn't affect dpf regen but a few specialist I know will tell you it's needed for regen especially on red dfp full signal. I had mine changed out so I was sure it was working. I recommend same to others now Gone to a good home: 2011 4.4 TDV8 Vogue SE Buckingham Blue with Ivory and clear glass = "Rory"
2025MY Defender D350 90 in Silicon Silver on coils
1974 Series 3 Lightweight = "Millie"
Many, many other Landies over the years
My preferred specialist: www.glenrands.co.uk
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Thanks for that - I'd done quite a bit of reading on that code on this forum and others but didn't seem to find a general concensus on it being done or not. I think, for the peace of mind, I'll add it to the list of things needing done. 2011 4.4 TDV8 Vogue SE - 'Black Betty'
2000 4.0 P38 HSE - 'Green Goblin' - Gone.
Audi..Mini..BMW..

Did you get it physically inspected or just the codes? 2012 TDV8 Vogue (L322)

Just the codes for now - was seriously pushed for time.

They've come back with a recommendation to replace the compressor and 2 relays. The price they've given seems way too hefty though at £1.1k parts, labour and vat.

I'm gonna presume that even if I was to replace the compressor of fix it, you still need diag to clear the codes or, as its a yellow fault, does that clear itself? 2011 4.4 TDV8 Vogue SE - 'Black Betty'
2000 4.0 P38 HSE - 'Green Goblin' - Gone.
Audi..Mini..BMW..

AFAIK reconditioned compressors are available and it's an easy DIY job to replace. 2012 TDV8 Vogue (L322)

I refurbished them on my p38 so would be happy doing the same for this one but don't want to throw money at things in the hope they fix it. 2011 4.4 TDV8 Vogue SE - 'Black Betty'
2000 4.0 P38 HSE - 'Green Goblin' - Gone.
Audi..Mini..BMW..

I'd hold off any decisions until it's had a full inspection as only then can you asses if the car is worth investing in or returning to the dealer...... 2012 TDV8 Vogue (L322)

I'd love it if I had somewhere local to do that but I just don't. Ideally I'd leave it with a company to check over etc and collect it when they're done.

Dealer is calling me tomorrow to discuss the car so we shall see what he says. 2011 4.4 TDV8 Vogue SE - 'Black Betty'
2000 4.0 P38 HSE - 'Green Goblin' - Gone.
Audi..Mini..BMW..

Scroll down to fourth post to see what I’ve done to mine to get it right....and I’m still going
https://www.fullfatrr.com/forum/topic44115...p;start=75 Gone to a good home: 2011 4.4 TDV8 Vogue SE Buckingham Blue with Ivory and clear glass = "Rory"
2025MY Defender D350 90 in Silicon Silver on coils
1974 Series 3 Lightweight = "Millie"
Many, many other Landies over the years
My preferred specialist: www.glenrands.co.uk
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Well, that's... Comforting  2011 4.4 TDV8 Vogue SE - 'Black Betty'
2000 4.0 P38 HSE - 'Green Goblin' - Gone.
Audi..Mini..BMW..

Actually, is there a telltale to see if the oil feed mod has been done? 2011 4.4 TDV8 Vogue SE - 'Black Betty'
2000 4.0 P38 HSE - 'Green Goblin' - Gone.
Audi..Mini..BMW..

Boot it in S mode to get the revs over 2400rpm and see if you have created a smoke cloud in your rear view mirror…… 2012 TDV8 Vogue (L322)

Been well over 2500rpm many, many times already. Zero smoke! 2011 4.4 TDV8 Vogue SE - 'Black Betty'
2000 4.0 P38 HSE - 'Green Goblin' - Gone.
Audi..Mini..BMW..

You have a non-smoker. Doesn't mean it has had the mod done. Not all do it.
Keep booting it to keep the pipe clear  Gone to a good home: 2011 4.4 TDV8 Vogue SE Buckingham Blue with Ivory and clear glass = "Rory"
2025MY Defender D350 90 in Silicon Silver on coils
1974 Series 3 Lightweight = "Millie"
Many, many other Landies over the years
My preferred specialist: www.glenrands.co.uk
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