P0102 - MAF - Clean or replace?
Discussion
My car is showing P0102, MAF sensor.
It's comes up immediately, even after it's cleared. It hasn't come on gradually just started it one day and the Engine light stayed on so I'm guessing something may have drastically broken inside it, rather than a slow build up of dirt. (That's all conjecture.)
So, is it worth cleaning it with contact cleaner or better just to replace. (£40 for Boshche or Siemens.)
TIA
It's comes up immediately, even after it's cleared. It hasn't come on gradually just started it one day and the Engine light stayed on so I'm guessing something may have drastically broken inside it, rather than a slow build up of dirt. (That's all conjecture.)
So, is it worth cleaning it with contact cleaner or better just to replace. (£40 for Boshche or Siemens.)
TIA
Sounds like a broken wire. First question is, is the MAF sensor the issue at all, or is it the wiring from its connector to the ECU? Because if its the wiring, replacing a good MAF sensor doesn't make sense.
And if it is the MAF sensor faulty, I don't believe cleaning will fix a broken wire.
Needs further diagnosis (proper diagnosis) before loading up the parts cannon.
And if it is the MAF sensor faulty, I don't believe cleaning will fix a broken wire.
Needs further diagnosis (proper diagnosis) before loading up the parts cannon.
paul_c123 said:
Sounds like a broken wire. First question is, is the MAF sensor the issue at all, or is it the wiring from its connector to the ECU? Because if its the wiring, replacing a good MAF sensor doesn't make sense.
And if it is the MAF sensor faulty, I don't believe cleaning will fix a broken wire.
Needs further diagnosis (proper diagnosis) before loading up the parts cannon.
So what's the next step? I have a multimeter but zero experience of testing MAFs.And if it is the MAF sensor faulty, I don't believe cleaning will fix a broken wire.
Needs further diagnosis (proper diagnosis) before loading up the parts cannon.
BikeBikeBIke said:
My car is showing P0102, MAF sensor.
It's comes up immediately, even after it's cleared. It hasn't come on gradually just started it one day and the Engine light stayed on so I'm guessing something may have drastically broken inside it, rather than a slow build up of dirt. (That's all conjecture.)
So, is it worth cleaning it with contact cleaner or better just to replace. (£40 for Boshche or Siemens.)
TIA
Point of note MAF issues are rarely a duff MAF.It's comes up immediately, even after it's cleared. It hasn't come on gradually just started it one day and the Engine light stayed on so I'm guessing something may have drastically broken inside it, rather than a slow build up of dirt. (That's all conjecture.)
So, is it worth cleaning it with contact cleaner or better just to replace. (£40 for Boshche or Siemens.)
TIA
Does the engine run OK?
What car/engine is it?
If you do replace go for the same make as OE.
E-bmw said:
BikeBikeBIke said:
My car is showing P0102, MAF sensor.
It's comes up immediately, even after it's cleared. It hasn't come on gradually just started it one day and the Engine light stayed on so I'm guessing something may have drastically broken inside it, rather than a slow build up of dirt. (That's all conjecture.)
So, is it worth cleaning it with contact cleaner or better just to replace. (£40 for Boshche or Siemens.)
TIA
Point of note MAF issues are rarely a duff MAF.It's comes up immediately, even after it's cleared. It hasn't come on gradually just started it one day and the Engine light stayed on so I'm guessing something may have drastically broken inside it, rather than a slow build up of dirt. (That's all conjecture.)
So, is it worth cleaning it with contact cleaner or better just to replace. (£40 for Boshche or Siemens.)
TIA
Does the engine run OK?
What car/engine is it?
If you do replace go for the same make as OE.
2nd gen Renault Trafic Van - 2010-2014.
Are MAF issues really rarely duff MAFs? You tube has vids of people fixing my fault code with new MAFs and on other vehicles fixing with cleaner and other people describing MAFs as consumables.
Yeah, I'm bracing myself for a nightmare but I'm mildly optimistic.
So I'll check the pipework around the MAF, check and clean the connectors, clean the MAF itself. Is there some testing I can do of the MAF itself? Will the values be written down somewhere?
BikeBikeBIke said:
E-bmw said:
BikeBikeBIke said:
My car is showing P0102, MAF sensor.
It's comes up immediately, even after it's cleared. It hasn't come on gradually just started it one day and the Engine light stayed on so I'm guessing something may have drastically broken inside it, rather than a slow build up of dirt. (That's all conjecture.)
So, is it worth cleaning it with contact cleaner or better just to replace. (£40 for Boshche or Siemens.)
TIA
Point of note MAF issues are rarely a duff MAF.It's comes up immediately, even after it's cleared. It hasn't come on gradually just started it one day and the Engine light stayed on so I'm guessing something may have drastically broken inside it, rather than a slow build up of dirt. (That's all conjecture.)
So, is it worth cleaning it with contact cleaner or better just to replace. (£40 for Boshche or Siemens.)
TIA
Does the engine run OK?
What car/engine is it?
If you do replace go for the same make as OE.
2nd gen Renault Trafic Van - 2010-2014.
Are MAF issues really rarely duff MAFs? You tube has vids of people fixing my fault code with new MAFs and on other vehicles fixing with cleaner and other people describing MAFs as consumables.
Yeah, I'm bracing myself for a nightmare but I'm mildly optimistic.
So I'll check the pipework around the MAF, check and clean the connectors, clean the MAF itself. Is there some testing I can do of the MAF itself? Will the values be written down somewhere?
MAF fault codes are mostly leaking inlet hose/pipe work or similar with a smattering of wiring issues and dirty MAFs, but rarely actual defective MAFs.
E-bmw said:
BikeBikeBIke said:
E-bmw said:
BikeBikeBIke said:
My car is showing P0102, MAF sensor.
It's comes up immediately, even after it's cleared. It hasn't come on gradually just started it one day and the Engine light stayed on so I'm guessing something may have drastically broken inside it, rather than a slow build up of dirt. (That's all conjecture.)
So, is it worth cleaning it with contact cleaner or better just to replace. (£40 for Boshche or Siemens.)
TIA
Point of note MAF issues are rarely a duff MAF.It's comes up immediately, even after it's cleared. It hasn't come on gradually just started it one day and the Engine light stayed on so I'm guessing something may have drastically broken inside it, rather than a slow build up of dirt. (That's all conjecture.)
So, is it worth cleaning it with contact cleaner or better just to replace. (£40 for Boshche or Siemens.)
TIA
Does the engine run OK?
What car/engine is it?
If you do replace go for the same make as OE.
2nd gen Renault Trafic Van - 2010-2014.
Are MAF issues really rarely duff MAFs? You tube has vids of people fixing my fault code with new MAFs and on other vehicles fixing with cleaner and other people describing MAFs as consumables.
Yeah, I'm bracing myself for a nightmare but I'm mildly optimistic.
So I'll check the pipework around the MAF, check and clean the connectors, clean the MAF itself. Is there some testing I can do of the MAF itself? Will the values be written down somewhere?
MAF fault codes are mostly leaking inlet hose/pipe work or similar with a smattering of wiring issues and dirty MAFs, but rarely actual defective MAFs.
BUT, the fact it comes back instantly when cleared (even when not running) makes me suspect that it's a totally failed MAF or wiring. I'd have thought that a leak would manifest itself fairly randomly, at different revs.
But yeah, I can clean the MAF and connectors which is as much wiring work as I can practically do. Look for perishing in the pipe, check the filter. See what happens.
I guess after that the next thing is decide between a new MAF or a visit from an auto electrician.
Firstly, how do I get this effing multiplug off? The obvious "presser" tab does nothing. There's nothing under it for it to hit. I've sprayed with silicon spray.
This shows where the lugs are, if that helps:
https://www.trucksitaliana.com/en/spare-parts/air-...
Secondly, does this MAF look borked? I was expecting wires hanging down but the new ones don't have them.
This shows where the lugs are, if that helps:
https://www.trucksitaliana.com/en/spare-parts/air-...
Secondly, does this MAF look borked? I was expecting wires hanging down but the new ones don't have them.
You won't tell by looking at it if it's borked unless it's caked in oil.
As far as getting the connector off if that serrated part does not release a locking tab you might need to get a right angled pick tool in there to release it.
Mates Dad has a Traffic that was so slow and lack of power, his was fixed by a MAF. Suprised that yours runs ok
As far as getting the connector off if that serrated part does not release a locking tab you might need to get a right angled pick tool in there to release it.
Mates Dad has a Traffic that was so slow and lack of power, his was fixed by a MAF. Suprised that yours runs ok
Edited by GVK on Friday 26th September 03:19
Result: A new MAF fixed it. I didn't even try cleaning it.
Easy access makes the job easy for a home mechanic.
It may be my imagination but it felt like the acceleration improved dramatically. Pulling away seemed to push me back in my seat. Perhaps the old MAF had been sending slightly incorrect values for years before it died dramatically. Or perhaps I'm not used to driving it without my family and assorted junk in it, or perhaps it's my imagination.
Massive thanks to everyone who helped.
Easy access makes the job easy for a home mechanic.
It may be my imagination but it felt like the acceleration improved dramatically. Pulling away seemed to push me back in my seat. Perhaps the old MAF had been sending slightly incorrect values for years before it died dramatically. Or perhaps I'm not used to driving it without my family and assorted junk in it, or perhaps it's my imagination.
Massive thanks to everyone who helped.
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