335d Lambda Sensor

Dan- · 11-22-2014, 06:57 PM

Hi guys, Quick question after experience with BMW lack of EML after losing both pressure converters and having no codes come up on my old mans 335d

Ive now got an MPG issue on mine, Ive been recently averaging 15-19mpg turned out my thermostats had gone so changed them, all good MPG crept back up to a good healthy 23-24 which is good to what it was but taking it for a long 100 mile drove today all on the M1 at a steady 60 mph i only averaged 35mpg where i used to average 47 on that run i realised maybe its not all good back to normal i still have an issue.

What are the odds that the lambda sensor has failed but not given a EML or error code on the ECU?

Dan- · 11-26-2014, 04:16 AM

anyone? driving me crazy, even after the 100 miles average I move my car from my drive to my neighbours and let it run for 5 mins my mpg dropped to 31!

mistryn · 11-26-2014, 04:37 AM

When my 02 sensor was failing my mpg dropped quite a bit. Best to scan car for codes as I did have a specific error code relating to it.

It is diy just need the sensor removal tool which is £6 from eBay and penatrative fluid.

Brand new is quite expenaive from.BMW iirc £170 I managed to get a second hand one for £40 off a car that done 30k

Dan- · 11-26-2014, 05:55 AM

thanks bud, that's the thing ive tried multiple readers and none of them are bringing anything up only fuel filter on each, from bmwhat app to 5k snap on system

weird

Dan- · 11-26-2014, 06:02 AM

I have all the tools and done a fair few temp sensors on the dpf on 330d at work not that difficult just tight, its the fact its £170 for a gamble

mistryn · 11-26-2014, 06:30 AM

have you got access to bmw code reader?
I cant remember the code off the top off my head, i was in the same position as I did not want tobuy a new sensor and it turned out to be wiring (although the code did point to the sensor) so I opted to buy a second hand with the intention of buying a new one if it cleared the code - it did but i managed to find a good second hand one so left it at that

Dan- · 11-26-2014, 06:56 AM

I can probs get it to BMW to be looked at, its just frustrating that even specific BMW readers £600 + wont pick up anything or no emission light on the dash like ive had on all my cars with lambda issues.

I might try look for a 2nd hand sensor whip it off 1 night when its dry

Darkswarmer · 01-03-2020, 01:28 PM

@Dan- did you ever find out if the sensor was contributing to poor MPG after replacing?

11-22-2014, 06:57 PM	#1
Dan- Lieutenant 25 Rep 512 Posts Drives: E92 335D, R6 Join Date: Dec 2013 Location: bedfordshire iTrader: (0)	335d Lambda Sensor Hi guys, Quick question after experience with BMW lack of EML after losing both pressure converters and having no codes come up on my old mans 335d Ive now got an MPG issue on mine, Ive been recently averaging 15-19mpg turned out my thermostats had gone so changed them, all good MPG crept back up to a good healthy 23-24 which is good to what it was but taking it for a long 100 mile drove today all on the M1 at a steady 60 mph i only averaged 35mpg where i used to average 47 on that run i realised maybe its not all good back to normal i still have an issue. What are the odds that the lambda sensor has failed but not given a EML or error code on the ECU? __________________ My Previous Cars 206 1.4, Sport Ka, 206 Gti, focus 1.8, Vectra 1.9 CDTi, Corsa 1.8 Sri, 206 Gti 180, Impreza Blobeye Sti Widetrack, Clio 172 Cup Track Car, E92 335D, Impreza Hatch STI, Evo IX FQ360MR, E92 M3 Competition
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11-26-2014, 04:16 AM	#2
Dan- Lieutenant 25 Rep 512 Posts Drives: E92 335D, R6 Join Date: Dec 2013 Location: bedfordshire iTrader: (0)	anyone? driving me crazy, even after the 100 miles average I move my car from my drive to my neighbours and let it run for 5 mins my mpg dropped to 31! __________________ My Previous Cars 206 1.4, Sport Ka, 206 Gti, focus 1.8, Vectra 1.9 CDTi, Corsa 1.8 Sri, 206 Gti 180, Impreza Blobeye Sti Widetrack, Clio 172 Cup Track Car, E92 335D, Impreza Hatch STI, Evo IX FQ360MR, E92 M3 Competition
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11-26-2014, 04:37 AM	#3
mistryn Colonel 147 Rep 2,048 Posts Drives: BMW 335D Join Date: Oct 2011 Location: Mids iTrader: (8)	When my 02 sensor was failing my mpg dropped quite a bit. Best to scan car for codes as I did have a specific error code relating to it. It is diy just need the sensor removal tool which is £6 from eBay and penatrative fluid. Brand new is quite expenaive from.BMW iirc £170 I managed to get a second hand one for £40 off a car that done 30k
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11-26-2014, 05:55 AM	#4
Dan- Lieutenant 25 Rep 512 Posts Drives: E92 335D, R6 Join Date: Dec 2013 Location: bedfordshire iTrader: (0)	thanks bud, that's the thing ive tried multiple readers and none of them are bringing anything up only fuel filter on each, from bmwhat app to 5k snap on system weird __________________ My Previous Cars 206 1.4, Sport Ka, 206 Gti, focus 1.8, Vectra 1.9 CDTi, Corsa 1.8 Sri, 206 Gti 180, Impreza Blobeye Sti Widetrack, Clio 172 Cup Track Car, E92 335D, Impreza Hatch STI, Evo IX FQ360MR, E92 M3 Competition
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11-26-2014, 06:02 AM	#5
Dan- Lieutenant 25 Rep 512 Posts Drives: E92 335D, R6 Join Date: Dec 2013 Location: bedfordshire iTrader: (0)	I have all the tools and done a fair few temp sensors on the dpf on 330d at work not that difficult just tight, its the fact its £170 for a gamble __________________ My Previous Cars 206 1.4, Sport Ka, 206 Gti, focus 1.8, Vectra 1.9 CDTi, Corsa 1.8 Sri, 206 Gti 180, Impreza Blobeye Sti Widetrack, Clio 172 Cup Track Car, E92 335D, Impreza Hatch STI, Evo IX FQ360MR, E92 M3 Competition
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11-26-2014, 06:30 AM	#6
mistryn Colonel 147 Rep 2,048 Posts Drives: BMW 335D Join Date: Oct 2011 Location: Mids iTrader: (8)	have you got access to bmw code reader? I cant remember the code off the top off my head, i was in the same position as I did not want tobuy a new sensor and it turned out to be wiring (although the code did point to the sensor) so I opted to buy a second hand with the intention of buying a new one if it cleared the code - it did but i managed to find a good second hand one so left it at that
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11-26-2014, 06:56 AM	#7
Dan- Lieutenant 25 Rep 512 Posts Drives: E92 335D, R6 Join Date: Dec 2013 Location: bedfordshire iTrader: (0)	I can probs get it to BMW to be looked at, its just frustrating that even specific BMW readers £600 + wont pick up anything or no emission light on the dash like ive had on all my cars with lambda issues. I might try look for a 2nd hand sensor whip it off 1 night when its dry __________________ My Previous Cars 206 1.4, Sport Ka, 206 Gti, focus 1.8, Vectra 1.9 CDTi, Corsa 1.8 Sri, 206 Gti 180, Impreza Blobeye Sti Widetrack, Clio 172 Cup Track Car, E92 335D, Impreza Hatch STI, Evo IX FQ360MR, E92 M3 Competition
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01-03-2020, 01:28 PM	#8
Darkswarmer Enlisted Member 4 Rep 31 Posts Drives: 2011 335d Join Date: Nov 2018 Location: Salt Lake City iTrader: (0)	@Dan- did you ever find out if the sensor was contributing to poor MPG after replacing?
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