Intake Air Temp (IAT) Temperature/Resistance Chart

Below you'll find the temperature to resistance relationship of the intake air temperature (IAT) sensor.

Temperature / Resistance
°F °C Ohms (Ω)
302 °F 150 °C     47 Ω
284 °F 140°C     60 Ω
266 °F 130 °C     77 Ω
248 °F 120 °C    100 Ω
230 °F 110 °C    132 Ω
212 °F 100 °C    177 Ω
194 °F  90 °C    241 Ω
176 °F  80 °C    332 Ω
158 °F  70 °C    467 Ω
140 °F  60 °C    667 Ω
122 °F  50 °C    973 Ω
113 °F  45 °C   1,118 Ω
104 °F  40 °C   1,459 Ω
 95 °F  35 °C   1,802 Ω
 86 °F  30 °C   2,238 Ω
 77 °F  25 °C   2,796 Ω
 68 °F  20 °C   3,520 Ω
 59 °F  15 °C   4,450 Ω
 50 °F  10 °C   5,670 Ω
 41 °F   5 °C   7,280 Ω
 32 °F   0 °C   9,420 Ω
 23 °F  -5 °C  12,300 Ω
 14 °F -10 °C  16,180 Ω
  5 °F -15 °C  21,450 Ω
 -4 °F -20 °C  28,680 Ω
 -22 °F -30 °C  52,700 Ω
 -40 °F -40 °C 100,700 Ω

IAT Sensor Test Summary

Testing the intake air temperature (IAT) sensor isn't hard to do. Hopefully this article was able to help you to troubleshoot the IAT sensor and/or diagnostic trouble codes P0112 or P0113.

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  • Colorado 3.5L
    • 2004, 2005, 2006
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GMC Vehicles:

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Hummer Vehicles:

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    • 2006

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Saturn Vehicles:

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