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Old 22-01-2017   #1
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Grande Punto 1.4 T Jet problems! p2227 fault code

Hi,

Having some intermittent problems with my T jet.

I have a fault code that keeps appearing, P2227. I've replaced the MAP sensor with a bosch sensor but I'm still having the same problem. I believe the fault relates to barometric pressure.

The car doesn't have as much power as it used to and feels like its misfiring when on boost. It used to boost to around 20psi, but now struggles most of the time to hit 10-15psi.

I've tried all sorts but I'm running out of ideas!

Does anyone know what else this fault code could be relating to?

Thanks
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Old 22-01-2017   #2
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Re: Grande Punto 1.4 T Jet problems! p2227 fault code

Hi,

Try testing the TPS and MAF sensors as these are other possible causes of that fault code, clean the sensors with some electrical contact cleaner. Then test the voltage and see if they are reading at the correct figures.

That would be all I can think of. Hope it helps you out a bit!

Regards,
Daniel
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Old 22-01-2017   #3
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Re: Grande Punto 1.4 T Jet problems! p2227 fault code

Quote Originally Posted by DH1995 View Post
Hi,

Try testing the TPS and MAF sensors as these are other possible causes of that fault code, clean the sensors with some electrical contact cleaner. Then test the voltage and see if they are reading at the correct figures.

That would be all I can think of. Hope it helps you out a bit!

Regards,
Daniel
There is no TPS or MAF on a TJet engine



Quote Originally Posted by Stemh View Post
Hi,

Having some intermittent problems with my T jet.

I have a fault code that keeps appearing, P2227. I've replaced the MAP sensor with a bosch sensor but I'm still having the same problem. I believe the fault relates to barometric pressure.

The car doesn't have as much power as it used to and feels like its misfiring when on boost. It used to boost to around 20psi, but now struggles most of the time to hit 10-15psi.

I've tried all sorts but I'm running out of ideas!

Does anyone know what else this fault code could be relating to?

Thanks
You replaced the sensor on the manifold right? There is one more before the intake on the inlet pipe. This is probably the sensor you are looking for.

If you can, read all the pressure values and post them here.
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Old 22-01-2017   #4
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Re: Grande Punto 1.4 T Jet problems! p2227 fault code

Ignore me then! Sorry!
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Old 23-01-2017   #5
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Re: Grande Punto 1.4 T Jet problems! p2227 fault code

Thanks for the help,

Yes it was the sensor on the manifold that I changed for a Bosch one. The other sensor on the inlet pipe hasn't been changed. It also has no sort of branding on it. Would it be worth trying to change this for a Bosch replacement?

I have no way of reading the pressure values, what would be the easiest/cheapest way to read them?

Thanks
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Old 23-01-2017   #6
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Re: Grande Punto 1.4 T Jet problems! p2227 fault code

If the 2 sensors are different makes, will they not work together?
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Old 23-01-2017   #7
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Re: Grande Punto 1.4 T Jet problems! p2227 fault code

If P2227 is actually refering to barometric pressure, you replaced the wrong sensor ! The one on the manifod is monitoring the turbo pressure, while the other as said by the P2227 is for the atmospheric pressure. They don't need to be the same brand to work together, Bosch MAP sensor can talk to Marelli ECU (they use German/Italian built-in Google translator ;-)

Regards, Bernie

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Old 23-01-2017   #8
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Re: Grande Punto 1.4 T Jet problems! p2227 fault code

Quote Originally Posted by Stemh View Post
I have a fault code that keeps appearing, P2227. I've replaced the MAP sensor with a bosch sensor but I'm still having the same problem.
What diagnostic tool did you use to get the P2227 code?

What fault description did it give for the code?
.
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Old 23-01-2017   #9
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Re: Grande Punto 1.4 T Jet problems! p2227 fault code

Thanks for your help!

I actually think I've replaced it with the wrong sensor. I've been reading different threads all day and it looks like the sensor I've put in, doesn't allow high enough boost.

The car has a vl38 turbo and uprated intercooler/injectors etc and was mapped at 170bhp by the previous owner.

I've read a post by "benpunto" giving part numbers for both sensors that allow higher boost.

I'm gonna try and change both for the right part numbers and hope it helps!

The description was - P2227 Barometric Pressure Sensor 'A' Circuit Range/Performance
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Old 23-01-2017   #10
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Re: Grande Punto 1.4 T Jet problems! p2227 fault code

Quote Originally Posted by Stemh View Post
Thanks for the help,

Yes it was the sensor on the manifold that I changed for a Bosch one. The other sensor on the inlet pipe hasn't been changed. It also has no sort of branding on it. Would it be worth trying to change this for a Bosch replacement?

I have no way of reading the pressure values, what would be the easiest/cheapest way to read them?

Thanks
No branding = aftermarket = problems.

Original Fiat GP T-jet Pressure sensor (intake pipe side) serial : 55206796

Edit:

You can replace with se sensor with the one from Abarth SS If you want. Serial : 55209194 (No point for now with vl38 but anyway)
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Last edited by cmosfxx; 23-01-2017 at 17:07.
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Old 23-01-2017   #11
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Re: Grande Punto 1.4 T Jet problems! p2227 fault code

At the moment, it has a tmap sensor 0281002437 and an unbranded pressure sensor on inlet pipe.

Could this cause the problems I'm having? When it's running spot on, it shows around 20-21 on boost gauge. Now, sometimes it feels like it's in limp mode just before engine management light shows up, sometimes it just feels like it hits 10psi and misfires/vibrates.

Thanks
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Last edited by Stemh; 23-01-2017 at 17:19.
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Old 23-01-2017   #12
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Re: Grande Punto 1.4 T Jet problems! p2227 fault code

Quote Originally Posted by Stemh View Post
At the moment, it has a tmap sensor 0281002437 and an unbranded pressure sensor on inlet pipe.

Could this cause the problems I'm having? When it's running spot on, it shows around 20-21 on boost gauge. Now, sometimes it feels like it's in limp mode just before engine management light shows up, sometimes it just feels like it hits 10psi and misfires/vibrates.

Thanks

I don't know the bosch serial.

Fiat serial for this sensor is : 55238125
(manifold pressure sensor)
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Old 23-01-2017   #13
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Re: Grande Punto 1.4 T Jet problems! p2227 fault code

Great! Thanks for that.

Il replace the 2 sensors and keep my fingers crossed!
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Old 23-01-2017   #14
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Re: Grande Punto 1.4 T Jet problems! p2227 fault code

Quote Originally Posted by Stemh View Post
I have a fault code that keeps appearing, P2227. I've replaced the MAP sensor with a bosch sensor but I'm still having the same problem. I believe the fault relates to barometric pressure.
By replacing the MAP sensor, I think you are misinterpreting the fault code.

I asked you what diagnostic tool you used, because some cheap code scanners are not programmed to interpret manufacturer specific codes correctly.

Codes P0001 to P0999 are generic codes so have the same meaning for all car manufacturers. All other codes, including P2227, can have different meanings for different manufacturers. For example: Mazda; P2227 = EGR Boost Sensor, Volvo; P2227 = ECU Internal Fault. For Vauxall, Fiat and several other manufacturers, P2227 = Atmospheric Pressure Sensor.

The Atmospheric Pressure sensor is located inside the engine management ECU and measures atmospheric pressure, not manifold pressure. It's subjected to different air pressure caused by weather conditions, or different altitude of the car, via slots in the side of the black bung on the ECU.
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Old 23-01-2017   #15
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Re: Grande Punto 1.4 T Jet problems! p2227 fault code

Quote Originally Posted by Davren View Post
For Vauxall, Fiat and several other manufacturers, P2227 = Atmospheric Pressure Sensor.
That's true but on a t-jet engine most of the times p2227 = pressure sensor on the intake pipe. I think the ecu thinks this must be an error of the Atmospheric pressure sensor since the boost seems ''not normal'' because it's too low.

That's why I've asked Stemh to show all the pressure values. Just to be sure...

But then he said that the sensor on the intake pipe is no-brand, so...
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