Hi I've recently read codes using memsdiag and can see on the grid view that the lambda sensor is reading 435mv and not moving as I've read others doing so...anybody know if this is normal..cheers
Lambda Sensor
Started by
Methaneman
, Feb 19 2020 07:55 PM
11 replies to this topic
#1
Methaneman
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Posted 19 February 2020 - 07:55 PM
#2
Tones61
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Posted 21 February 2020 - 06:33 PM
Should switch between 0 v and 0.8v about every second 
#3
Methaneman
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Posted 21 February 2020 - 07:40 PM
It's not moving from 435mv.tested relay,injection module,breaks in loom behind manifold..I'm using rovermemsdiag app all other sensor readings are fine...
#4
Methaneman
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Posted 22 February 2020 - 08:42 AM
It's a new lambda sensor..could this be at fault..
#5
genpop
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#6
cian
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Posted 22 February 2020 - 03:16 PM
Is it a genuine Bosch sensor
#7
Methaneman
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Posted 24 February 2020 - 06:14 PM
I'm not to sure about it being genuine..I cant really remember.im going to check the heater element side of things next with voltmeter...
#8
cian
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Posted 24 February 2020 - 09:06 PM
Any time I’ve had mpi / spi minis in and the customers supplies aftermarket sensors they have a static figure genuine Bosch ones fluctuate as they should
#9
Methaneman
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Posted 25 February 2020 - 06:05 PM
That's interesting..theres no misfire or really bad issues with idle...could mot time be a problem tho??..would it be worth fitting a genuine one...
#10
cian
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Posted 25 February 2020 - 07:49 PM
Potentially with regards emissions if the sensor isn’t working
#11
Alice Dooper
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Posted 01 March 2020 - 10:28 PM
Second what Cian’s saying - he worked on mine with the same issue. I bought a generic O2 against his advice and had emissions problems and incorrect readings on the sensor. I did find that the sensor plug had the pins in the wrong place when I was testing it too!!
Anyway, I gave up, bought a genuine Bosch, took it round to Cian’s (he has nice sockets for sensors, a scanner and a good emissions tester). Hey presto and all good!!!
Took her to MOT last week and I wasn’t worrying about the emissions for once.
#12
MR J
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Posted 04 March 2020 - 12:17 PM
Had trouble with my car a couple of years ago and used memsdiag. My car was stuck in open loop control and the o2 sensor wasn't reading properly. I'd fitted an aftermarket sensor a year or so before and struggled to get it through the MOT, I refitted my original Bosch sensor and everything worked as it should and it sailed through the next MOT
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