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Home > Maintenance & Modifications > Bank 1 sensor 1 fault code, restricted engine performance
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Balderick



Member Since: 10 Apr 2021
Location: Lincolnshire
Posts: 10

England 2011 Freelander 2 TD4 HSE Auto Indus Silver
Bank 1 sensor 1 fault code, restricted engine performance

Hi,
My 2.2 auto is sulking. I have restricted performance and a sensor 1 code fault. As she is 10 yrs I thought EGR. It made sense with rough cold starting until I checked out your forum and the battery health.
So, I swapped out the EGR as I had already bought it, cleaned the cooler chamber cleared the fault code and had the EGR registered to the car.

All felt good for about 11 seconds ......then back to restricted performance once the engine is up to temperature. It behaves until then. Big Cry

I need to change sensor 1, which I think is the probe under the EGR. Can it be doe without removing the EGR a second time?

Anyone got hand hints I would appreciate them.

I hoped a happy EGR = a happy sensor 1. Sadly it doesn't.

Post #406664 15th Apr 2021 4:52 pm
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alex_pescaru



Member Since: 12 Mar 2009
Location: RO
Posts: 4640

Oxigen sensor.

Post #406665 15th Apr 2021 5:08 pm
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dorsetfreelander



Member Since: 20 Jul 2013
Location: Dorset
Posts: 4336

United Kingdom 2014 Freelander 2 SD4 XS Auto Loire Blue

I had this a few years ago

https://www.freel2.com/forum/topic24379.html 3 x FL1 2 manual + 1 auto
5 x FL2 4 manual + 1 auto
Now Discovery Sport P250 MHEV SE

Post #406666 15th Apr 2021 5:30 pm
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Balderick



Member Since: 10 Apr 2021
Location: Lincolnshire
Posts: 10

England 2011 Freelander 2 TD4 HSE Auto Indus Silver

Thanks guys, £176 sensor 1collected today. Thanks for the heads up regarding sensor 2 coming out in sympathy with sensor 1. Hopefully sensor 2 will will behave. Sensor 2 is around £80 if it does fail.

I am thinking of taking the cat off and working at a bench. I really cannot imaging the sensor coming out without a fight. Anyone tried this?

Cheers

Post #406684 16th Apr 2021 11:55 am
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gasman



Member Since: 02 May 2013
Location: Tyneside
Posts: 856

United Kingdom 2009 Freelander 2 TD4_e GS Manual Zermatt Silver

Sensor not that difficult to remove as long as you have an O2 sensor socket. Can be done with everything in place from under the car. Sensor torqued to 45nm. Give it a spray with release oil and leave it to soak in and it will come out easy. Now at the point when I learn something new something old is lost out the other side !
Now retired so it doesn't matter anymore.
Freelander now gone.

Post #406719 17th Apr 2021 6:00 pm
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Balderick



Member Since: 10 Apr 2021
Location: Lincolnshire
Posts: 10

England 2011 Freelander 2 TD4 HSE Auto Indus Silver

Thanks for the advice. I now have a happy FL2, back to full power, no fault codes.

In the end it was sensor 1, which is under the EGR and actually behaved itself and came off after a good dose of penetrating spray. Duckworth Land Rover in Boston have been brilliant when ordering and Kings Garage for walking me through the sensors. It took a while before the penny dropped and the right parts were ordered and the wrong ones exchanged.

The Bonus is the O2 sensor is not required and will go back.

So EGR replaced (not required but I had already bought it), EGR chamber cleaned, EGR pipe and inlet started to clog so caught in time. Genuine LR sensor1 (£80) behaving perfectly and the old one coming out without to much of a fight Thumbs Up

Result!

Post #406732 17th Apr 2021 9:55 pm
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gasman



Member Since: 02 May 2013
Location: Tyneside
Posts: 856

United Kingdom 2009 Freelander 2 TD4_e GS Manual Zermatt Silver

Didn't know there was a sensor under the EGR valve. I'll have to have a look next time. Thumbs Up Now at the point when I learn something new something old is lost out the other side !
Now retired so it doesn't matter anymore.
Freelander now gone.

Post #406760 18th Apr 2021 11:09 am
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Nodge68



Member Since: 15 Jul 2020
Location: Newquay
Posts: 1766

United Kingdom 2009 Freelander 2 TD4 SE Manual Rimini Red

02 sensor 1 is just downstream of the turbo. I've ringed it red in this picture. Wink

Click image to enlarge
 2009 Rimini Red SE TD4. My daily driver.
Gone. 2006 Tonga Green i6 HSE.

Post #406788 19th Apr 2021 10:14 am
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gasman



Member Since: 02 May 2013
Location: Tyneside
Posts: 856

United Kingdom 2009 Freelander 2 TD4_e GS Manual Zermatt Silver

My mistake......I know about that one, took it out to clean a while back. I thought we were talking about a second one. Thumbs Up Now at the point when I learn something new something old is lost out the other side !
Now retired so it doesn't matter anymore.
Freelander now gone.

Post #406791 19th Apr 2021 11:06 am
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