[Jihan Kibria]

Hi there,

I am new to the club. I had the same issue with my Mazda 6, 2015 sky-active. I was on highway at suddenly SCBC forward malfunction and traction control one. The fault code was Air mass meter. Error Message : Outside specified range.P258B - Vacuum pump control. I took to garage and done he’ll number of work.

clean EGR
Clean manfo
Change intake, inlet manfold
Change timing chain
Change rockers and lifters
Change vacuum pump
Change MAF airflow sensor

still no luck.

Reading all your experience I am not finding any confidence to go Mazda.

Any suggestion?

 

[joremi1957]

Hi there,

I am new to the club. I had the same issue with my Mazda 6, 2015 sky-active. I was on highway at suddenly SCBC forward malfunction and traction control one. The fault code was Air mass meter. Error Message : Outside specified range.P258B - Vacuum pump control. I took to garage and done he’ll number of work.

clean EGR
Clean manfo
Change intake, inlet manfold
Change timing chain
Change rockers and lifters
Change vacuum pump
Change MAF airflow sensor

still no luck.

Reading all your experience I am not finding any confidence to go Mazda.

Any suggestion?

I have the same problem with the 'scbs forward malfunction' automatic gearbox (I am from the Netherlands)
I did the same as you did:
clean EGR
Clean manfo
Change intake, inlet manfold
Change timing chain
Change rockers and lifters
Change vacuum pump
Change MAF airflow sensor


but I just replace my exhaust camshaft and the very expensive rockers yesterday as well. Let's wait and see.

 

[Jihan Kibria]

Dear all, the problem could be electrical or mechanical, it is important to establish the problem first. Please check the harness wire voltage make sure this need the expected reading. After doing all the work, I have changed the air flow mass sensor. Bought an original used one from eBay for £30. As soon as I accelerate the padal felt the difference. I have driving over 2 weeks now the fault did not come back. I hope the problem has been fixed now.

 

[C0RN15H]

I have the same problem with the 'scbs forward malfunction' automatic gearbox (I am from the Netherlands)
I did the same as you did:
clean EGR
Clean manfo
Change intake, inlet manfold
Change timing chain
Change rockers and lifters
Change vacuum pump
Change MAF airflow sensor


but I just replace my exhaust camshaft and the very expensive rockers yesterday as well. Let's wait and see.

Hi how's car now after the cam and rockers and how badly worn were they hope all is sorted as I have the same lights and only code that is there when scanned is pointing to air mass this car is alot of stress IV had it for nearly 3 years and it's been a dream apart from last 3/4 months

 

[Love but Hate my Mazda]

Has any one managed to totally solve this problem? I have been in love with Mazda 6 cars for over 10 years. 2 years ago I sold my old shape 2007 diesel for an upgrade to a 2016 diesel. The 16 plate drove beautifully for the first 6 months. The last 18 months I have thrown about £3000 at this car trying to solve this problem. I love this car when it's driving as it should but right now I'm exhausted with it. I can't sell it, my conscious wouldn't cope, if I trade it Mazda already no the problems with it so will give a crap deal and I can't afford to put towards another car. I can't take out finance as I have another 2 years on my motorbike finance to clear.

Thinking on printing all of what I see here on the forum and going to trading standards or ombudsman to make Mazda accountable. Madza know there is a problem and all of these cars should have been recalled.

I am totally gutted, such a beautiful car. Everything listed on this forum I have already done in regards to repairs. I need some one that has managed to solve this once and for all.

Any help gratefully appreciated

 

[Jihan Kibria]

Hi how's car now after the cam and rockers and how badly worn were they hope all is sorted as I have the same lights and only code that is there when scanned is pointing to air mass this car is alot of stress IV had it for nearly 3 years and it's been a dream apart from last 3/4 months

I have had changed number of things

lifters, rocker arms, timing chain, vacuum pump,

the code was still there and pointing to air mass. I bought a used mass airflow original sensor frim eBay. Guess what!!!!

the car has been gone back to normal.

there are so many video on YouTube. It is important you do your research before you take it to garage.

 

[C0RN15H]

Dear all, the problem could be electrical or mechanical, it is important to establish the problem first. Please check the harness wire voltage make sure this need the expected reading. After doing all the work, I have changed the air flow mass sensor. Bought an original used one from eBay for £30. As soon as I accelerate the padal felt the difference. I have driving over 2 weeks now the fault did not come back. I hope the problem has been fixed now.

To be fair that is codes I'm getting is for air mass but when I key on and off again it go's could be for couple hours or couple days I mite try that and see thanks my guy appreciate the message 😀

 

[morganthomas757]

Have owned my Mazda 6 2.2d for about 3 months now, and I also had the SBCS forward malfunction appear on my dash. Could this be related to my persistent error code P2227 for Barometric Pressure Sensor that I've been getting?

 

[C0RN15H]

Hi mate it's hard to say as people are spending thousands on there car and it still being the same issue, I'm yet to change my MASS AIR FLOW SENSOR due to time I have such a busy week by the time I sit down it's like 9 10 at nite, and weekends are catch up time with the family. On here can't member name but said that after spends loads on car put in a 2nd hand MAFS and has driven 300+ miles and no light, it's a hard 1 but I deffo think mazda fooked up on these engines as it's not just 1 or 2 I think most of us have the same issues. Hope that's some help if any 😀

 

[Andymac100]

Hi. Mazda6 2.2 2015. Had same problem. Stop restart engine and fault disappeared.
Changed/updated to Genuine Mazda Modified Exhaust Gas Pressure Sensor Kit - SHY618W00 and so far fault has not returned...
Worth a try...

 

[Teklaw]

Hi all, yesterday same thing happened to me in my Mazda 6 2.2d 2016. Unfortunately when I stop and start car again the fault is not gone. Based on your answers I cleaned maf sensor, dpf sensor and exhaust sensor today but this didn't help too. I tried to connect obd scanner but for some reason couldn't connect. I have icarly obd. I'll see my mechanic monday to try locate the problem and then perhaps replace it myself but so far no good. One thing I noticed as well is not working cruise control.

 

[MozzaS]

I share the pain of everyone else on this forum (2015 Mazda6 owner). After DPF regens, a new turbo (different issue but we hoped it might have a positive effect), 2 sensors changed etc the warning lights just keep coming back.
Has anyone got a proven solution to the recurrent Traction Control, SCBS, Tyre Pressure, DPF combination of warning lights?

 

[Love but Hate my Mazda]

Having spent thousands on my mazda 6, had 9 different mechanics to try to solve the problem, 1 major fall out with local mazda dealer. Mazda dealer insist a carbon clean will solve it, I told them that all the information I have read leads me to believe it won't work. Local branch then inform me that their carbon clean will at the cost of 900+ vat.. not a risk I'm willing to take so to save anyone else the pain and expense of this car I am taking mine for scrap 😪 3 years of spending money and trying to solve the problem and no help from mazda themselves. I have tried all the forums for a solution, there appears to not only not be a solution but no care from mazda themselves. I took all the evidence from the forums in to my dealer and they basically said the forums are a lie and a joke.. each time the lights come on now then car feels worse and worse to drive and I can't give the pain of this car to someone else. I wish you all the best of luck in solving yours but I have spent more than the cars worth now, it's almost bankrupt me and so time to part ways with it and find something that I feel safe and confident to drive.

 

[C0RN15H]

Having spent thousands on my mazda 6, had 9 different mechanics to try to solve the problem, 1 major fall out with local mazda dealer. Mazda dealer insist a carbon clean will solve it, I told them that all the information I have read leads me to believe it won't work. Local branch then inform me that their carbon clean will at the cost of 900+ vat.. not a risk I'm willing to take so to save anyone else the pain and expense of this car I am taking mine for scrap 😪 3 years of spending money and trying to solve the problem and no help from mazda themselves. I have tried all the forums for a solution, there appears to not only not be a solution but no care from mazda themselves. I took all the evidence from the forums in to my dealer and they basically said the forums are a lie and a joke.. each time the lights come on now then car feels worse and worse to drive and I can't give the pain of this car to someone else. I wish you all the best of luck in solving yours but I have spent more than the cars worth now, it's almost bankrupt me and so time to part ways with it and find something that I feel safe and confident to drive.

I'm.sorry to hear that friend I was thinking the same thing but I haven't paid mine of yet, stuck in finance so I may as well run it in to the ground. I'm going to take the plunge and by the MAF and AIR MASS sensors as soon as it can and maybe a carbon clean up. As this is the only car I have may be ABIT difficult as work and family commitments [need car for miss and kids] so can't be off the road. That pretty s h I t y of Mazda to be like that as none of us on here no what we are talking about I'm sure and all of us are making the issues up of corse lol. I work for a dealer sorry I'm not going to say what 1 but just no it's not Mazda or I would have a fix by now I'm sure. Will keep updated as and when I get chance to tinker and fit parts, thanks for info pepz chat soon

 

[C0RN15H]

I share the pain of everyone else on this forum (2015 Mazda6 owner). After DPF regens, a new turbo (different issue but we hoped it might have a positive effect), 2 sensors changed etc the warning lights just keep coming back.
Has anyone got a proven solution to the recurrent Traction Control, SCBS, Tyre Pressure, DPF combination of warning lights?

Hi do you no what sensors you or were changed? And turbo wow must of been a pricey job sorry that it didn't help some people on here have changed the exhaust cam and lifter and still fault there, I really hope Mazda stop using this engine as they must no there crap. I have removed my DPF and had sensors and EGR mapped out I no naughty but it was the cheaper of the 2 options as I am skint. I have yet to change the MASS and MAF air flow sensors but I'm.going to start there and hopefully a carbon clean de-coke I have cleaned the EGR out about a year ago it was very bad blocked, probs back to the same state again now

 

[C0RN15H]

Hi all, yesterday same thing happened to me in my Mazda 6 2.2d 2016. Unfortunately when I stop and start car again the fault is not gone. Based on your answers I cleaned maf sensor, dpf sensor and exhaust sensor today but this didn't help too. I tried to connect obd scanner but for some reason couldn't connect. I have icarly obd. I'll see my mechanic monday to try locate the problem and then perhaps replace it myself but so far no good. One thing I noticed as well is not working cruise control.

Hi how did the visit to your mechanic go? Did he or you solve the issue hope so and yeah I get the same with this my cruise control info to

 

[C0RN15H]

Hi. Mazda6 2.2 2015. Had same problem. Stop restart engine and fault disappeared.
Changed/updated to Genuine Mazda Modified Exhaust Gas Pressure Sensor Kit - SHY618W00 and so far fault has not returned...
Worth a try...

Hi how is your Mazda still no fault back on hopefully not and you and your M6 are loving life again 😊

 

[MozzaS]

Hi do you no what sensors you or were changed? And turbo wow must of been a pricey job sorry that it didn't help some people on here have changed the exhaust cam and lifter and still fault there, I really hope Mazda stop using this engine as they must no there crap. I have removed my DPF and had sensors and EGR mapped out I no naughty but it was the cheaper of the 2 options as I am skint. I have yet to change the MASS and MAF air flow sensors but I'm.going to start there and hopefully a carbon clean de-coke I have cleaned the EGR out about a year ago it was very bad blocked, probs back to the same state again now

Hi - update follows:
Replaced components to date since this issue started (may not be all but it gives an idea) - most recent first:

• Replaced brake vacuum pump
• Sump checked for blockages – none found
• Replaced turbo (turbo #1 had failed – waste gate valve pin had snapped inside it)*
• Replaced turbo pressure sensor (had melted)*
• Turbo cleaned *
• Fitted new exhaust temperature sensor
• Fitted new exhaust pressure sensor (burned out)
• Fitted new turbo vacuum solenoid for #1 turbo
• Changed air filter
• Forced DPF regeneration at the garage (diagnostics showed a low build up in the DPF. Subsequently, diagnostics has consistently show v. low build up in the DPF and that the car is automatically regenerating)
• Extended driving at 2000RPM to force regeneration

*Believed to be unrelated to persistent warning light issues

I need to put some miles on the car and see if the fault recurs. Next step if it is still faulty will probably be professional DPF cleaning or DPF replacement on the presumption that the diagnostic read-out, which still shows very low levels of build up, is wrong?
Any thoughts?

 

[C0RN15H]

Hi - update follows:
Replaced components to date since this issue started (may not be all but it gives an idea) - most recent first:

• Replaced brake vacuum pump
• Sump checked for blockages – none found
• Replaced turbo (turbo #1 had failed – waste gate valve pin had snapped inside it)*
• Replaced turbo pressure sensor (had melted)*
• Turbo cleaned *
• Fitted new exhaust temperature sensor
• Fitted new exhaust pressure sensor (burned out)
• Fitted new turbo vacuum solenoid for #1 turbo
• Changed air filter
• Forced DPF regeneration at the garage (diagnostics showed a low build up in the DPF. Subsequently, diagnostics has consistently show v. low build up in the DPF and that the car is automatically regenerating)
• Extended driving at 2000RPM to force regeneration

*Believed to be unrelated to persistent warning light issues

I need to put some miles on the car and see if the fault recurs. Next step if it is still faulty will probably be professional DPF cleaning or DPF replacement on the presumption that the diagnostic read-out, which still shows very low levels of build up, is wrong?
Any thoughts?

Wicked thanks for up date, umm I think a low build up in the DPF should not be that bad surely it shouldn't be regen-ing if there is only very small build up? The regen kicks in I believe at over 50 for a certain amount of time and the car is up at temp. (I may be wrong) There is a TOPDON OND daughter kit out there I think it's like 190ish and dose re-gen and a few other things. https://amzn.eu/d/8rkh46a I must say tho I'm going to get for scan next week as people on hear SWEAR by it

 

[Benedict]

I have just had the same problem. Dealer thinks it has something do do with a sensor - around $2000 just for the part.

Ask him to prove it and layout the thought process for you.
I didn't know there were any sensors of that value $2000. He should be able to test the sensor before replacing it. At that price I would expectba 2nd opinion from another garage.
You can check the MAP sensor yourself, see if it is heavily carboned, which means the inlet manifold is and the EGR system.

The MAF sensor usually stops you revving over say 2k to 2.5k. If this is diconnected electrically at the plug, the car driven and drives fine, but with black smoke then usually its the MAF. You can change that yourselfin about 5 minutes with the right tools. Think its two screws, thats all.