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I asked one forum member about it, he said it was a P0101 error code and a dirty map sensor. I hope they find your problem. Looking forward for your reply.
I had these faults said fault P0101 MAF sensor , its not the fault as i cleaned this sensor, changed this sensor , payed for a diagnostic test at dealership , they came back and said your car needs decoking, even though I do 50miles a day , and the faults are scbs and collision fault, and obde says master flow sensors, must be a known fault as I didn't have to pay for the repair ( £1500, head office payed, but they wouldn't show me the service sheet) this was last year 2020 April, but now a malfunction light comes up but not fault stored so I'm off the a dealership again!!!!
 

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I had these faults said fault P0101 MAF sensor , its not the fault as i cleaned this sensor, changed this sensor , payed for a diagnostic test at dealership , they came back and said your car needs decoking, even though I do 50miles a day , and the faults are scbs and collision fault, and obde says master flow sensors, must be a known fault as I didn't have to pay for the repair ( £1500, head office payed, but they wouldn't show me the service sheet) this was last year 2020 April, but now a malfunction light comes up but not fault stored so I'm off the a dealership again!!!!
I also have the P101 MAF sensor fault, as well as issues as described earlier in thread, will look to clean and maybe changes sensor as seems to have worked for some( but not others) .
 

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I was quoted £300 for Mazda mass airflow sensor, but can see Chinese versions on ebay for £20 - £40 so will try one of these first if cleaning does not work. I'll report back on results.
 

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2014 Sport NAV - Jet Black Diesel MT6
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I’d go with a used genuine MAF as per above link rather than buying cheap Chinese shit. At least you’ve got a chance it will work.

I bought a new genuine MAF sensor from a Mercedes dealership for £260 + VAT years ago for misses’s merc only to find out it wasn’t that...
 

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Update on this. Last Sunday I removed the MAF sensor and gave it a couple of sprays from a MAF cleaner I got from Amazon, plenty of videos on youtube on how to do this, was very easy. I've done about 300 miles over the last 9 days and had no issues at all. I would have expected the various warning lights to go on 4 or 5 times over this period based on previous weeks. If it does start again I'll get a new sensor. My main concern was paying out for it if it was not the issue as has happened to plenty on here. Thanks also for the comments re. genuine MAF vs cheap Chinese, I will go genuine. cheers.
 

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Hey! A little update. I was today at mazda workshop. They change the Air flow censor. Last time i was there they said this was broken. So today they change it, and also update the car with the latest updates. I have been testdriving the car, and for now it seems fine, been driving downhill and pushing it to get the failures i have been having, but everything seems normal. I will update you if the problem comes back. But hopefully this will help you guys with the problem too
-Eddy
hello, did the error ever came back on?
 

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Knew I posted too soon. Faults came back a couple of days ago on a long drive. It does seem that I went a long time without the faults compared to before I cleaned the MAS but maybe this is wishfull thinking. Will call garage tomorrow and see what they have to say about it. If I do buy a new MAS, have been looking on ebay and can not find one with exact code as on current one - does anyone know how important the last 4 number are - in this case 6422?
 

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I've had the same problem for many months on Mazda 2.2 diesel 2016 GJ. The car has been driving as normal but the SCBS code was coming up together with traction control light. I learnt on the way that this is the way Mazda 6 tells you there is a problem and you need to plug in to a computer for diagnostic. My error code was P0101 - Air Flow, Air Mass Meter.

Since I developed the problem I had:

  • MAF sensor replaced with a genuine Mazda one (£250 - I wouldn't go with a non-genuine tbh)
  • Manifold cleaned up
  • MAP sensor cleaned up and checked
  • EGR cooler cleaned up and checked
  • all pipes/connectors checked up
  • oil and filters replaced (twice in the space of 5k miles)
  • strainer cleaned up

I also learnt that Mazda 6 requires injector washers change as the copper ones worn and may cause a lot of various problems.
Copper washers were replaced with steel ones (genuine Mazda part)
During the change my mechanic found out that injector number 2 was seized.
He couldn't do it with manual tools as he would risk damaging the plastic cover of the engine, which would cost a lot to replace.
I found Dan from Diesel Matters (UK) who specialises in that sort of work who just got it out this morning with a set of very specialist tools. The seized injector was already worn too so we had to change it (£340)

Now I need to flush the engine to get as much carbon built up out as possible and replace oil/filter again and clean the strainer.

I hope that this work will be enough and that the MAF sensor issues was only some sort of side effect of the injector issue.

But time will tell!
 

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I've had the same problem for many months on Mazda 2.2 diesel 2016 GJ. The car has been driving as normal but the SCBS code was coming up together with traction control light. I learnt on the way that this is the way Mazda 6 tells you there is a problem and you need to plug in to a computer for diagnostic. My error code was P0101 - Air Flow, Air Mass Meter.

Since I developed the problem I had:

  • MAF sensor replaced with a genuine Mazda one (£250 - I wouldn't go with a non-genuine tbh)
  • Manifold cleaned up
  • MAP sensor cleaned up and checked
  • EGR cooler cleaned up and checked
  • all pipes/connectors checked up
  • oil and filters replaced (twice in the space of 5k miles)
  • strainer cleaned up

I also learnt that Mazda 6 requires injector washers change as the copper ones worn and may cause a lot of various problems.
Copper washers were replaced with steel ones (genuine Mazda part)
During the change my mechanic found out that injector number 2 was seized.
He couldn't do it with manual tools as he would risk damaging the plastic cover of the engine, which would cost a lot to replace.
I found Dan from Diesel Matters (UK) who specialises in that sort of work who just got it out this morning with a set of very specialist tools. The seized injector was already worn too so we had to change it (£340)

Now I need to flush the engine to get as much carbon built up out as possible and replace oil/filter again and clean the strainer.

I hope that this work will be enough and that the MAF sensor issues was only some sort of side effect of the injector issue.

But time will tell!
Thanking you for the update, this gives us some potential root causes for the issue. Amazing that the seized injector was only discovered when changing out washers!
 

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Apparently, there is no solution at the moment. No one around here have given any suggestion.
Hello everyone, SCBS error sorted by following:
i have taken the car to Mazda UK Dealer, they said the turbo is under performing and the vacuum pump is faulty.
So I have done the following:
- turbo fault was just a screw and 3 washers to change , there's a turbo repair kit got it from ebay poland at £60, new mazda vacuum pump £120, plus garage works sorted at about £300 in total with parts, I have done around 300 miles and the car is performing great.
I have attached the diagnose sheet from mazda as well, my OBD 2 testers came up the same issues.
Plus I had the engine light on as well.
Font Material property Parallel Monochrome Pattern

Font Material property Parallel Monochrome Pattern
 

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Hello everyone, SCBS error sorted by following:
i have taken the car to Mazda UK Dealer, they said the turbo is under performing and the vacuum pump is faulty.
So I have done the following:
- turbo fault was just a screw and 3 washers to change , there's a turbo repair kit got it from ebay poland at £60, new mazda vacuum pump £120, plus garage works sorted at about £300 in total with parts, I have done around 300 miles and the car is performing great.
I have attached the diagnose sheet from mazda as well, my OBD 2 testers came up the same issues.
Plus I had the engine light on as well.
View attachment 244571
View attachment 244572
Hi there thanks for your detailed post. May I know if the initial error code you had before those detailed diagnostic was P0101 related to MAF? SCBS malfunction is only indicating there is an issue and specific errors might be different than the mass airflow one. Thanks!
 

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see the turbo fault diagnosis sheet as well
Hi there thanks for your detailed post. May I know if the initial error code you had before those detailed diagnostic was P0101 related to MAF? SCBS malfunction is only indicating there is an issue and specific errors might be different than the mass airflow one. Thanks!
yeah I had that code error as well, I have attached here the turbo diagnostics fault from mazda dealer
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I hope this helps someone but I had exactly the same problem for nearly eight months....then one day I serviced my 2.2 CX5 myself and found the small hose below the main air intake pipe on the air filter housing was not connected, it looks like a return breather hose. Once reconnected and driven a few miles fault has gone. I had Air mass metre fault and scbs fault. Now completely gone and all for a tiny push on pipe.
 
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