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have had 2 codes for 2 days now car in limp mode:(

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Old 11-01-2005, 03:32 AM
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Default have had 2 codes for 2 days now car in limp mode:(

2001.5 A4 1.8t AWM
manifold pressure boost sensor(G31)signal too low
P0237

manifold barometric sensor(G71)/(F96)implausible signal.P0106

As soon as I clear them they come right back instantly. Without even turning on the car, it has to be something electrical, just got a new MAF from the dealer could it have gone bad already?
Old 11-01-2005, 04:26 AM
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For G31, check group115 field4. For F96, check group113 field4. Should be 1bar @ sea level @ idle
Old 11-01-2005, 05:11 AM
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ok thanks I will once I get home, if its not then what?
Old 11-01-2005, 05:55 AM
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Check the connector and the wiring first, then the sensor.
Old 11-01-2005, 06:21 AM
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thanks again which sensors though?
Old 11-01-2005, 07:01 AM
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group 115 for G31, group 113 for F96.
Old 11-01-2005, 07:27 PM
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Default Want, I checked the groups here is what I got...

Group115:charge pressur control(boost)
Engine speed-760/min
Engine Load-20.3%
spec.Boost-990.0 mbar
actual Boost-30.0 mbar

Group113:
idle speed-760/min
Engine load-20.3%
throttle drive-2.0%
Air pressure-995.0 mbar

Do those numbers seem normal? this is at idle.All of my connections are ok.
Old 11-02-2005, 12:00 AM
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Default The barometric sensor(G71)/(F96) should be OK. The reading (Group115 actual boost) of ...

manifold pressure boost sensor(G31) is really too low. It should be around 1000 mbar.
So, you should check the connector and the wiring and the sensor(G31) itself. I think the best way is to swap the sensor(G31) with the other car.
Old 11-02-2005, 05:25 AM
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Thanks where is that sensor located though(G31)?In front of the TB?
Old 11-02-2005, 05:40 AM
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on the intercooler for 1.8T.


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