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Guest Message by DevFuse
 

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what's mean of atmospheric pressure sensor -check engine on?


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8 replies to this topic

#1 gsheng

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Posted 18 September 2004 - 09:36 PM

hi, my 1991 non-turbo wagon works well but check light on. The trouble code is #45,atmospheric pressure sensor-faulty sensor. So, what's possible reseason for that? I appreciate for kind instruction. I also try to clear the code with battery out and fuse disconnection, neither of such ways work. What's should I do then?
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#2 Cougar

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Posted 20 September 2004 - 11:33 AM

The atmospheric sensor is used by the ECU to make changes to fuel mixture as the air pressure changes. This helps when you drive over mountain passes.

It sounds like you may need to just replace it. Check the wiring to it first before replacing it, and make sure things are ok there.

#3 gsheng

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Posted 03 October 2004 - 12:03 AM

thank you very much.

#4 lastchance

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Posted 05 November 2013 - 02:24 PM

back from the dead...

 

where is the sensor located? is it external (from the ECM) for the ea81 as it is the ea82?



#5 nipper

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Posted 07 November 2013 - 12:22 AM

it is an external sensor. I am not sure where it is on here, been ages since I have seen one. On newer subarus it is on the passenger side strut tower, and has a hose attached to it as it does double duty, on yours I dont remember



#6 Gloyale

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Posted 08 November 2013 - 12:06 PM

It is not external on the EA82 cars.

 

It's built into the ECU.

 

Turbo models only had a "pressure sensor" but that's really about boost sensing.  Not Atmosphere.

 

Latter models do have MAP sensors.....but not in EA82....it's in the ECU.



#7 lastchance

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Posted 08 November 2013 - 12:20 PM

It is not external on the EA82 cars.

 

It's built into the ECU.

 

Turbo models only had a "pressure sensor" but that's really about boost sensing.  Not Atmosphere.

 

Latter models do have MAP sensors.....but not in EA82....it's in the ECU.

 

and for the ea81t? 



#8 Gloyale

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Posted 08 November 2013 - 12:28 PM

and for the ea81t? 

 

They have an external sensor for "High Alltitude" and one for Boost pressure.



#9 Gloyale

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Posted 08 November 2013 - 12:31 PM

hi, my 1991 non-turbo wagon works well but check light on. The trouble code is #45,atmospheric pressure sensor-faulty sensor.

 

Code 45 is not Atmospheric control.

 

Code 45 for a 91 Loyale would be for "kickdown control relay"






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