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doclees



Member Since: 24 Jun 2015
Location: PA
Posts: 468

United States 2004 Range Rover HSE 4.4 V8 Java Black
0x41A Lambda control adaption exceeds lower limit bank 1

Anyone know what this means? I now know its not O2 sensor because that just came up on bank 2. Thanks. Can't find it anywhere but in reference to LPG conversion on a land rover.

Post #366978 14th Jan 2016 12:20am
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stan
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England 2012 Range Rover Westminster TDV8 Santorini Black

could be the pcv valve pipes or the maf sensor.. .








Post #366987 14th Jan 2016 8:55am
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doclees



Member Since: 24 Jun 2015
Location: PA
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United States 2004 Range Rover HSE 4.4 V8 Java Black

OK so an update on this code. So basically lambda adaption is anything to do with fuel/air mixture. Most often it is caused by aging O2 sensor but MAF, vacuum leak, bad fuel, injectors, spark plugs, catalytic converter can do it. Mine is probably O2 sensor but since it only pops up once a month or less I need to further sort it out. Iidtool live values look within normal range at this time so we just wait until it happens again and see if I can see something more definitive.

Post #367492 17th Jan 2016 6:17am
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doclees



Member Since: 24 Jun 2015
Location: PA
Posts: 468

United States 2004 Range Rover HSE 4.4 V8 Java Black

OK so some update on this. A while back I replaced the 2 downstream O2 sensors with no change on the Lambda codes being thrown now and then. I have read that any air getting into the system that bypasses the MAF can trigger this. I noticed my snorkel to intake wasn't that tight. I could wiggle it off so I tightened it so it has no wiggle. Haven't seen the code in a few hundred miles now but still early. Anyone have this cause the fault code?

Post #433222 30th Mar 2017 2:53pm
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b348xyx



Member Since: 29 Sep 2016
Location: Kent
Posts: 203

United Kingdom 2003 Range Rover Vogue 4.4 V8 Adriatic Blue

i had this code for both banks, Fuel pump failing and when on load the pump was not giving the engine the fuel it needed.

i did fuel pressure test to work this out to be sure. replaced fuel pump with boosh unit for bmw x5 alot cheaper !!

i also had the car die at the lights and took ages to restart, and then would take few seconds to start.. if i put my foot down alot i would get engine light saying Lambda control adaption exceeds lower limit bank 1 and 2.

But there mainly causes for this code, its normally not the o2 sensors.


 2003 Range Rover 4.4 Litre V8 - Adriatic blue

2003 Range Rover 4.4 Litre V8 -Maintenance History Click Here = http://www.fullfatrr.com/forum/topic39687.html

Post #433285 30th Mar 2017 9:08pm
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doclees



Member Since: 24 Jun 2015
Location: PA
Posts: 468

United States 2004 Range Rover HSE 4.4 V8 Java Black

Although most of the time I was.getting bank 1 lambda followed by both banks less frequently I had the bank 1 downstream O2 fault come up about 4 times so figured to go from there.

Post #433288 30th Mar 2017 9:24pm
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doclees



Member Since: 24 Jun 2015
Location: PA
Posts: 468

United States 2004 Range Rover HSE 4.4 V8 Java Black

So much for that theory. Fault tripped again. This time with bank 2 downstream O2. It is new. Maybe not seated deep enough. Will pull it and clean all the threads to depth.

Post #434483 10th Apr 2017 5:14pm
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b348xyx



Member Since: 29 Sep 2016
Location: Kent
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United Kingdom 2003 Range Rover Vogue 4.4 V8 Adriatic Blue

done a fuel pressure test ? 2003 Range Rover 4.4 Litre V8 - Adriatic blue

2003 Range Rover 4.4 Litre V8 -Maintenance History Click Here = http://www.fullfatrr.com/forum/topic39687.html

Post #434484 10th Apr 2017 5:17pm
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doclees



Member Since: 24 Jun 2015
Location: PA
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United States 2004 Range Rover HSE 4.4 V8 Java Black

Not yet. But I haven't forgotten your suggestion. I don't have any fuel delivery symptoms yet. No start issues or power issues. Oh but wait. I have a fuel level sensor fault this time. Hmmm... Ruling out the stuff that directly, normally, affects the lambda values first. IIdtool folks said to watch live values. Unfortunately I'm not up to speed what they should be. I don't fully understand how to set triggers on the values either.

Post #434489 10th Apr 2017 6:10pm
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doclees



Member Since: 24 Jun 2015
Location: PA
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United States 2004 Range Rover HSE 4.4 V8 Java Black

Just to update. It hasn't been confirmed the pump was causing the lambda fault but I'm betting it was.

http://www.fullfatrr.com/forum/topic45124.html

Post #456859 10th Nov 2017 10:24pm
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doclees



Member Since: 24 Jun 2015
Location: PA
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United States 2004 Range Rover HSE 4.4 V8 Java Black

Return of the lambda fault code so not the fuel pump.

Post #459906 6th Dec 2017 11:40pm
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ohuntsman



Member Since: 21 Mar 2016
Location: Surrey
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United Kingdom 2002 Range Rover Vogue 4.4 V8 Zambezi Silver

Happens to mine - I'm on LPG - any suggestions are welcome Smile

Post #459927 7th Dec 2017 11:03am
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