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Home > Faults & Fixes > Code 0406 Exhaust Gas Re circulation Sensor A circuit high

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rayb22

Member Since: 17 Sep 2014
Location: england
Posts: 10

Code 0406 Exhaust Gas Re circulation Sensor A circuit high

Car has engine management light on and checked the code which is 0406 Exhaust Gas Re circulation Sensor A Circuit high. Also is the A circuit driver or passengers side.
Car is a Sport 2.7 TDV 6 08 plate and is still running ok
Was wondering if any one has removed the EGR before and cleaned up the valve.
I suspect that due to it the circuit being high that the internals are clogged up causes more amps to be used to operate the EGR correctly.
Could any one advise on any cleaner if the cleaning process is viable.

Thanks Ray

Sun Jul 23 2017 3:44am

Disco_Mikey

Member Since: 08 Apr 2012
Location: Dundee, Scotland
Posts: 4393

2010 Range Rover Sport Supercharged HSE Santorini Black

Just blank them

Sun Jul 23 2017 5:48am

Bodsy
Site Sponsor

Member Since: 03 Feb 2007
Location: Shropshire
Posts: 2162

What Mike said.
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Software Updates Contact me
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BAS Engine Re-maps/ EGR Blank EuIII and EuIV
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See it HERE

Sun Jul 23 2017 7:21am

rayb22

Member Since: 17 Sep 2014
Location: england
Posts: 10

If the EGRS are removed and blanked does the EMU need remapping to remove the warning light.
Also will removal not cause problems with emission test during MOT

Sun Jul 23 2017 5:57pm

rayb22

Member Since: 17 Sep 2014
Location: england
Posts: 10

Mikey,
If the EGRS are removed and blanked does the EMU need remapping to remove the warning light.
Also will removal not cause problems with emission test during MOT

Sun Jul 23 2017 6:08pm

Disco_Mikey

Member Since: 08 Apr 2012
Location: Dundee, Scotland
Posts: 4393

Yes, the PCM needs a software patch, but easily overcome

EGR is currently not tested for MOT purposes, so no issues come MOT time

Sun Jul 23 2017 6:59pm

Green Spyghs

Member Since: 25 Jul 2017
Location: Barrow
Posts: 2

Re: Code 0406 Exhaust Gas Re circulation Sensor A circuit hi

rayb22 wrote:
Car has engine management light on and checked the code which is 0406 Exhaust Gas Re circulation Sensor A Circuit high. Also is the A circuit driver or passengers side.
Car is a Sport 2.7 TDV 6 08 plate and is still running ok
Was wondering if any one has removed the EGR before and cleaned up the valve.
I suspect that due to it the circuit being high that the internals are clogged up causes more amps to be used to operate the EGR correctly.
Could any one advise on any cleaner if the cleaning process is viable.

Thanks Ray

@rayb22 if you remove it and stick it in the sink with a spot of fairy liquid, should be right as rain!

All the best friend,

G

Tue Jul 25 2017 4:04am

Disco_Mikey

Member Since: 08 Apr 2012
Location: Dundee, Scotland
Posts: 4393

Really?

Tue Jul 25 2017 5:48am

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