2F0C - intake air temperature sensor

Dusty

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Aug 25, 2018
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So this code:
2F0C - Intake air temperature sensor.

The code started appear week ago at WoT. Well i bought new n20 tmap sensor and new intake air temperature sensor . Still same code at WoT. I have checked/cleaned all connectors to sensors. In logs the temps are not jumping to the roof. Anyone have the clue what is this about?

Have mhd custom map and this upgrades
New stock coils/plugs
Upgrated turbos
Intlets +dci
Cp+tial bov with tmap sensor adapter for bov line
n20 tmap sensor with adapter
Catless dps
Soon 7.5fmic(couple weeks)
Now in custom map timing lowered to keep temps down.
 
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Jeffman

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Jan 7, 2017
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I tried to look it up but could not find 2F0C.
However, FWIW, my list of codes has:
2F08 inlet air temperature sensor, signal

Perhaps it’s your harness to the N20 TMAP that’s problematic?
 

Dusty

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Aug 25, 2018
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I tried to look it up but could not find 2F0C.
However, FWIW, my list of codes has:
2F08 inlet air temperature sensor, signal

Perhaps it’s your harness to the N20 TMAP that’s problematic?

Thnx for trying to help. The code started appear before i upgraded the n20tmap on chargepipe. After that i tought that it must be the sensor on intakemanifold and bought oem sensor on that one too. But still the code appears near redline on WoT pulls.
 

Rcboosted2007

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Engine/trans:Jb4 with anti lag mod,mhd BEF,xhp flash, mmp turbos,PI,meth injection, Fbo,stage 3 lpfp, PR coils,30 psi tune,mmp Turbo inlets. Psp outlets. 2 step colder plugs. OCC,with vtt vented oil cap.im sure im missing other smaller items. I just cant get the damn thing to run without some kind of code popping up.
 

Rcboosted2007

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53B13F3F-FF71-4134-AA9E-C78C0663EE4A.png
 

Rcboosted2007

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Yes. Yesterday I noticed while cruising the IAT display through jb4,is bouncing around in value erratically ex. 0....91....blank.....92.....0...91
 

R.G.

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Yes. Yesterday I noticed while cruising the IAT display through jb4,is bouncing around in value erratically ex. 0....91....blank.....92.....0...91


There's a small sensor in your front frame rail just below your kidney grills on driver side. Sensor could be bad but likely just have the wires pinched. Wire runs from passenger side across front rail to the sensor.
 

Dusty

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There's a small sensor in your front frame rail just below your kidney grills on driver side. Sensor could be bad but likely just have the wires pinched. Wire runs from passenger side across front rail to the sensor.
You mean outside temperature sensor? If yes thats wrong one.
 

R.G.

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You mean outside temperature sensor? If yes thats wrong one.

Yea, just realized IATs. The other two sensors can be popped out and cleaned. One in the intake mani and the one in the charge pipe.

If running the N20+ adapter clean the harness to adapter connector and make sure it's plugged all the way in. Reset adaptations thru MHD then let it idle for a few minutes. If still an issue then one of the TMaps might be bad.
Try swapping the tmap you replaced with the N20 in to the manifold to isolate issue. I believe they are identical part numbers but you can double check on realoem
 

Dusty

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Aug 25, 2018
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Yea, just realized IATs. The other two sensors can be popped out and cleaned. One in the intake mani and the one in the charge pipe.

If running the N20+ adapter clean the harness to adapter connector and make sure it's plugged all the way in. Reset adaptations thru MHD then let it idle for a few minutes. If still an issue then one of the TMaps might be bad.
Try swapping the tmap you replaced with the N20 in to the manifold to isolate issue. I believe they are identical part numbers but you can double check on realoem

Yea done all that and bought even new sensors but no luck with this problem. Code only pops on wot near the redline.
 

R.G.

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Yea done all that and bought even new sensors but no luck with this problem. Code only pops on wot near the redline.


Check wiring at DME
OEM harness wires that deal with intake temp

#10 Yellow wire
#9 black and yellow wire
#11 Blue and yellow
#17 Yellow and red
 
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R.G.

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Ye o have not been on dyno. Only on street wot pulls. I will check the harness

Assuming you have the correct option checked in MHD and tuner has confirmed any setting on his end are correct, it would have to be the harness or the N20 itself that are faulty.

Update thread after resolved so it can be used as a reference for others later.
 

Rcboosted2007

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Assuming you have the correct option checked in MHD and tuner has confirmed any setting on his end are correct, it would have to be the harness or the N20 itself that are faulty.

Update thread after resolved so it can be used as a reference for others later.
I ordered a new n20 sensor. Ill update my end also. The harness and sensor has about 200 miles on it.
 
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Dusty

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Well last week i changed all mine injectors to index 12 and installed vrsf 7.5 race intercooler. Logged many times allready and no codes anymore!