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leftofcentre



Member Since: 04 Feb 2018
Location: Bolton
Posts: 32

United Kingdom 2010 Freelander 2 TD4 Sport Manual Santorini Black
P0406 Exhaust Gas Recirculation Sensor A Circuit High

Had this come up with an associated CEL light on my 2.2 59 plate FL2 Sport.

EGR blanked around new year with no obvious benefits or losses. Done about 1000 miles since then.

I cleared the fault and will monitor.

Any advice? Ive read "egr" posts to death.... I thought pre 2011 FL2's did not throw CEL lights regarding egr blank?

Post #344585 10th Mar 2018 2:29 pm
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alex_pescaru



Member Since: 12 Mar 2009
Location: RO
Posts: 4642

You blanked the flow, not disabled the hardware. It's a big difference.
Therefore, it will not throw errors about the gas flow - the blanking stuff - but it will still throw codes if the EGR valve - which is still functioning, even if the circuit is blanked - is malfunctioning.

Post #344609 10th Mar 2018 6:17 pm
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leftofcentre



Member Since: 04 Feb 2018
Location: Bolton
Posts: 32

United Kingdom 2010 Freelander 2 TD4 Sport Manual Santorini Black

And if i pull the electrical plug on the egr actuator, will the fault still flag up?

Post #344707 11th Mar 2018 11:03 pm
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Yorky Bob



Member Since: 28 Apr 2015
Location: Yorkshire
Posts: 4561

United Kingdom 2013 Freelander 2 TD4 GS Manual Firenze Red

Why not try it and tell us what happened. FL2 MY10 TD4 GS traded in at 2 years
FL2 MY13 TD4 GS Current

Post #344713 11th Mar 2018 11:30 pm
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leftofcentre



Member Since: 04 Feb 2018
Location: Bolton
Posts: 32

United Kingdom 2010 Freelander 2 TD4 Sport Manual Santorini Black

Update...
Unplug the EGR and the CEL illuminates and eventually the car goes into Limp mode.

Post #345254 17th Mar 2018 9:08 pm
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Cherokee



Member Since: 12 Jun 2018
Location: Portishead
Posts: 76

United Kingdom 2010 Freelander 2 TD4_e HSE Manual Zermatt Silver

Thread resrection - did you get any conclusion to this, the reason I ask driving home last night whilst on cruise control, EML came on, car did not go into limp mode.

Read the code this morning & P0406, I too have a EGR blanking plate in place.

Any suggestions anyone, should I reset the code and see if it immediately recurs.

Any help greatly appreciated.



Cheers
Brian Thumbs Up

Post #386643 17th Feb 2020 12:10 pm
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andyk159



Member Since: 19 Nov 2014
Location: Skegby
Posts: 369

United Kingdom 2010 Freelander 2 TD4 HSE Auto Stornoway Grey

Had the P0406 code with engine warning light today.

Reset, but came back with P0489, P042E and P042F which are also EGR related.

Resetting again just repeats

Had blanking plate fitted for about 40k miles.

Is EGR now knackered? Crying or Very sad Andy
Freelander2 HSE (59 Plate, MY10 spec)

Post #387435 2nd Mar 2020 5:38 pm
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micken



Member Since: 11 Jan 2012
Location: West Yorkshire
Posts: 50

United Kingdom 2015 Freelander 2 SD4 Metropolis LE Auto Firenze Red

@andyk159 your EGR may not be at fault. I had similar recently after the car had been to the body shop on a third party claim. They removed the rear bumper and quarter panel and presumably disconnected the battery in doing so. First I knew about it was limp mode on the M62. I looked into this over the next few weeks on this forum and other LR sites. Came to the conclusion that it may be an electronic fault.

Long story short, I decided to disconnect the battery, touched the lead’s together for just over a minute. Reconnected the battery, locked the car and left it an hour like that. I then recalibrated the throttle body and removed all dtcs. That was three weeks ago and no problems since.

I suspect there’s been a number of EGRs needlessly replaced in FL2s, Ewoks and possibly DSs.

You need a code reader that can do the throttle body calibration. Worth a try. Thumbs Up

I used the Icarsoft CR V2.0 model that allows up to 10 manufacturers to be downloaded to the memory card.

Post #387449 2nd Mar 2020 10:44 pm
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andyk159



Member Since: 19 Nov 2014
Location: Skegby
Posts: 369

United Kingdom 2010 Freelander 2 TD4 HSE Auto Stornoway Grey

Thanks Micken, will try a hard reset and see what happens, but why need to recalibrate throttle body?
I did have this done after I changed it, but why after hard reset? Andy
Freelander2 HSE (59 Plate, MY10 spec)

Post #387471 3rd Mar 2020 12:58 pm
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micken



Member Since: 11 Jan 2012
Location: West Yorkshire
Posts: 50

United Kingdom 2015 Freelander 2 SD4 Metropolis LE Auto Firenze Red

Some of my research suggested that throttle body issues such as sending request to the EGR to go to places it can't go, which throws up voltage issues leading to DTCs. I suspected that fault codes P0403-71 and Code P0405-77 could be linked to Land Rover service bulletin LTB00739.

See threads

https://www.freel2.com/forum/topic26616.html?highlight=ltb00739

https://www.freel2.com/forum/topic20555.html?highlight=ltb00739

in particular

Post #310948

can't say I have experienced the hesitation but had LR Assist out today, following a 'restricted performance' error earlier that wouldn't clear by reset.
On connecting his computer he immediately said " I know this fault, there is a technical bulletin for it. LTB000379.
Apparently my car had a fault code for it along with another for the EGR valve which had been told to go to a position it cannot get to?
10 minutes later and I was on my way again, the car was also noticeably smoother so maybe it has been bad for a while.
The software update related to the bulletin will not be automatically applied, only to those cars experiencing a fault, the software was released at the back end of 2015.
Not sure what the fault code was unless it's on my paperwork, I'll check tomorrow.

and

Post #310961

LTB00739 - 2.2L DW12 Engine Hesitation With Diagnostic Trouble Code P0403-71 Or P0405-77 ..... EGR stuff...

Sorry, I'm not sure how to reference the posts more directly.

LR Technical Customer Services didn't get back to me when I enquired by phone about LTB00739 and TOPix now needs a subscription, which I wasn't prepared to go in to.

Seems that Post #310948 problem was sorted at the side of the road without replacement parts. I figured at least a hard reset and possibly throttle body calibration, which is what I did and it sorted the issue.

Good luck with your problem.

Post #387473 3rd Mar 2020 3:44 pm
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andyk159



Member Since: 19 Nov 2014
Location: Skegby
Posts: 369

United Kingdom 2010 Freelander 2 TD4 HSE Auto Stornoway Grey

Thanks. I'll post how it turns out. Andy
Freelander2 HSE (59 Plate, MY10 spec)

Post #387485 3rd Mar 2020 7:29 pm
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andyk159



Member Since: 19 Nov 2014
Location: Skegby
Posts: 369

United Kingdom 2010 Freelander 2 TD4 HSE Auto Stornoway Grey

Update on this.

Battery replaced as proved faulty even though only 2 years old with 4 year warranty. This solved starting issues.

Bought icarsoft v2.0 that allowed me to reset EGR dtc's and recalibrate throttle body.
This does appear to have cured the repeated codes as they have not returned, yet 🤞🤞🤞

Thanks for advice Mick Andy
Freelander2 HSE (59 Plate, MY10 spec)

Post #388457 18th Mar 2020 12:00 pm
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micken



Member Since: 11 Jan 2012
Location: West Yorkshire
Posts: 50

United Kingdom 2015 Freelander 2 SD4 Metropolis LE Auto Firenze Red

Good to hear that Thumbs Up

My take on it is battery issue or disconnection somehow interferes with throttle body calibration, which throws up error codes for EGR etc. There's plenty of info on a variety of issues related to battery supply and electrical spikes on FL2 and some are reluctant to use a jump start power pack for these reasons.

No further problems with mine and it's been the best part of two months.

All the best, Mixk

Post #388473 18th Mar 2020 1:27 pm
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