Posted: Wed Nov 06, 2019 1:36 pm Post subject: Fault Code P1090
In need of a bit of guidance on a fault code that has started following a major service and gearbox oil change. I've started to notice some hesitation when accelerating from low revs.
The OBD2 screenshots are below:
I suspect something is not right with the MAF sensor looking at the data???
Any advice welcome _________________ 2007 997 C2S Cobalt Blue
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deMort Dijon
Joined: 21 Mar 2015 Posts: 7581 Location: Brighton
Posted: Wed Nov 06, 2019 7:23 pm Post subject:
Might want to check they have plugged the maf sensor wiring back on as it doesn't sound like it .
Fault code is for a dead maf ..
The readings you have posted .. if they are with the engine running then the maf is certainly dead.
Air intake at -40 is a default non registering maf ..
Maf at 0 grams per sec is also a non registering maf . _________________ .
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Thank you all so Very much .
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addavies Newbie
Joined: 21 Mar 2016 Posts: 16 Location: Solihull
Posted: Wed Nov 06, 2019 8:37 pm Post subject:
Spot on diagnosis as usual deMort. Found MAF unplugged plus another cable and what I think is a vacuum pipe? Plugged the 2 cables back in and all is fine. Not sure where the black pipe connects though.
It looks like all the cables were unplugged for the belt change that I forgot to mention was done. The air filter was untouched as I've got a BMC one. _________________ 2007 997 C2S Cobalt Blue
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deMort Dijon
Joined: 21 Mar 2015 Posts: 7581 Location: Brighton
Posted: Wed Nov 06, 2019 8:40 pm Post subject:
Yup .. airbox is removed for a drive belt change and they forgot to plug it back in ..
Easy mistake to make so don't blame them too much .. we are after all only human .
EDIT ..
Black pipe goes into a rubber elbow on that grey electric valve ... its to do with sound i believe .. never really taken much notice of it to be honest as it does not cause a fault . _________________ .
My Daughter's Crowdfunding has hit the target .
Thank you all so Very much .
She's not going until july 2020 though .
7pm - 9pm
Now At An Indy.
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