Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Intake air temperature sensor, location/task/design/function - GF07.04-P-2100F: Notes
ENGINE 104.943 /944 /991 /994 as of 1.8.96
ENGINE 104.995 with CODE (494a) USA version with CODE (807) Model year 1997 with CODE (808) Model year 1998 with CODE (498) as of Model Year 97 Japanese version
ENGINE 104.941 as of 1.8.96
ENGINE 111.921 /942 as of 1.9.98, 111.943, 111.944 as of 1.8.96, 111.946 as of 1.6.98, 111.947 /973, 111.975 as of 1.8.96, 111.977
ENGINE 111.945 in MODEL 208.335 /435 as of 1.6.98, 202.020 /080 as of 1.9.98
ENGINE 111.974 with CODE (494a) USA version with CODE (807) Model year 1997 with CODE (808) Model year 1998
ENGINE 112.910 /911 /912 /913 /914 /916 /917 /920 /921 /922 /923 /940 /941 /942 /943 /944 /946 /947 /949 /953 /954 /955 /970 /972 /973 /975
ENGINE 113.940 /941 /942 /943 /948 /960 /961 /963 /965 /966 /967 /968 /969
ENGINE 119.980 /981 /982 /985
ENGINE 120.982/ 983
ENGINE 137.970
| Example of intake air temperature | Engine 119, 120 | Engine 104, 111, 112, 113, 137 |
| Engine 104, 111 (HFM) Resistor ±5 % |
Resistor ±5 % | |
| 10 °C | 9670 Ω | 3604 Ω |
| 20 °C | 6060 Ω | 2420 Ω |
| 40 °C | 2600 Ω | 1166 Ω |
| Intake air temperature sensor, location | Engine 104, 111 (HFM), Engine 119, 120 (ME1.0) On engine 104 ME, 111 ME, 112, 113,137 the intake air temperature sensor is integrated in the hot film mass air flow sensor. |
GF07.04-P-2100-01F | |
| Intake air temperature sensor, task | Records the inlet air temperature and sends a signal to the engine control unit. The signal is used for calculating the air mass. The amount injected and the point of ignition are influenced. | ||
| Intake air temperature sensor, design | Plastic housing with a NTC resistor, 2-pin plug connection | ||
| Intake air temperature sensor function | The NTC resistor integrated in the intake air temperature sensor, alters its electrical resistance in line with the intake air temperature. NTC means Negative Temperature Coefficient; which means that the electrical resistance drops as the temperature increases. |
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
