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air intake sensor 98 s70 t5

Help, Advice and DIY Tutorials on Volvo's extremely popular car line -- Volvo's 1990s "bread and butter" cars -- powered by the ubiquitous and durable Volvo inline 5-cylinder engine.

1992 - 1997 850, 850 R, 850 T5-R, 850 T5, 850 GLT
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1997 - 2000 V70, V70 AWD
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mattfromtn
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Year and Model: 1998
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air intake sensor 98 s70 t5

Post by mattfromtn »

Getting a code for a intake air temp sensor and I'm not sure where the sensor is located, is that the same as the two sensors on the bumper cover or something different? I search for the part of fcp euro and it says its for 99 up
LUDErunner11
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Re: air intake sensor 98 S70 t5

Post by LUDErunner11 »

I believe the intake air temperature sensor is integrated into the MAF sensor. Please, someone else chime in if I am wrong.
Stu70
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Re: air intake sensor 98 S70 t5

Post by Stu70 »

Sensor is located where a MAF would be on a P2 car. Find the air box, big round tube coming out the left side - sensor is two wire (usually blue coloured plug) right on the top of that. An inch or so from air box lid. Will bring up a 1-2-2 flash code. Usually fairly robust component. Remove from rubber grommet,clean and check resistance - about 2.2k ohms at 20 degrees C.
Check plug for corrosion/ bad contacts and the wiring at edge of air box - can rub through with vibration.
Hope that helps

Stu


!!sorry overlooked the T5 bit - this would be for N/A :roll:

^^ +1 Its in the MAF sensor
1998 S70 10v BiFuel “it’s a what??”
Last of three factory fitted CNG Press Cars :roll:
mattfromtn
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Re: air intake sensor 98 S70 t5

Post by mattfromtn »

Sorry to bring this back up but I replaced the maf with a known working one from my other 98 t5 and it still throws the code. Any suggestions?
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erikv11
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Re: air intake sensor 98 S70 t5

Post by erikv11 »

What code is it throwing?
'95 854 T5-R, Motronic 4.4, 185k
'96 855 NA, 145k
'98 S70 NA, 220k (living out west)
'98 V70, T5 tune-injectors-turbo, LPT engine, 293k
'06 S60 R, 167k
'07 XC70, 170k
'99 Camry V6 :shock: 130k
gone: '96 NA 850 210k, '98 NA V70 182k
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abscate
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Re: air intake sensor 98 S70 t5

Post by abscate »

A lot of code readers don't map the P code to the correct symptom. You probably don't have bad air temp sensor.

Post the P code so we can confirm that. IF someone reads it for you, don't let them give you the fault, get the P code.
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mattfromtn
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Re: air intake sensor 98 S70 t5

Post by mattfromtn »

Been pulling it myself with Bluetooth obd2 and the app on my phone it's p0112.
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erikv11
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Re: air intake sensor 98 S70 t5

Post by erikv11 »

This p0112 code causes a lot of confusion. I think this is what is going on. It is true that on a 98 the MAF calculates intake air temps, but that function has nothing to do with the p0112. I am pretty sure that on m4.4 cars, the p0112 traces to the temp sensor "with the blue connector." On a 98 it is usually on the passenger side of the car, up front near the little grill in the bumper:
IAT sensor, 98 V70
IAT sensor, 98 V70
By the way, this is the exact same sensor part that is plugged into the gray connector over on the driver's side, for the ambient air temperature (AAT) display on the dash. So there are two of these on the car, but p0112 relates to the blue-connector one. I don't know if this IAT actually figures into engine management; is the fuel economy bad now that you have this code?

Here is a shot of both sensors on a 97 850, but they will be on separate sides of the car on a 98:
IAT and AAT, 96 850
IAT and AAT, 96 850
Course of action for me would be to examine/clean/unplug/replug the sensor on the blue connector. If that doesn't fix it then likely the sensor itself is bad. The sensor is the same part as the ambient temp one (gray connector), so just swap them around to test (assuming your in-dash temp display is working OK?). The dash display will go to -40 if the sensor is disconnected or bad, and the p0112 code should go away if the other sensor and all the wiring is good.

Please let us know what you find!
'95 854 T5-R, Motronic 4.4, 185k
'96 855 NA, 145k
'98 S70 NA, 220k (living out west)
'98 V70, T5 tune-injectors-turbo, LPT engine, 293k
'06 S60 R, 167k
'07 XC70, 170k
'99 Camry V6 :shock: 130k
gone: '96 NA 850 210k, '98 NA V70 182k
mattfromtn
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Year and Model: 1998
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Re: air intake sensor 98 S70 t5

Post by mattfromtn »

I will check out thanks a bunch!
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Re: air intake sensor 98 S70 t5

Post by misha »

erikv11 wrote: Here is a shot of both sensors on a 97 850, but they will be on separate sides of the car on a 98:
IMG_4696.jpg
I don't have that blue sensor on my M 4.4...at least not at that position. :?
There are two holes on the carrier,but only one sensor is attached there.The grey one.
Is that only for turbo models?
'97 850 2.5 20v / fully equipped / Motronic 4.4 from the factory / upgraded with S,V,C,XC70 instrument cluster / polar white wagon
'91 Citroen XM 2.0 SI /fully equipped/mandarine red metallic
History of Volvos in the family:
'71 144 S
'73 144 De Luxe
'78 244 DL
'78 244 DL
'79 244 GLE
'85 340 GLS
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