5801291814 GAS TEMPERATURE SENSOR

IVECO GAS TEMPERATURE SENSOR

🔧 What is the exhaust gas temperature sensor?

The EGTS (Exhaust Gas Temperature Sensor) measures the gas temperature at different points in the exhaust to:

• Control and protect the aftertreatment system (DPF, SCR, catalytic converter).

• Verify suitable conditions for particle filter regeneration.

• Prevent overheating.

• Monitor the efficiency of the catalytic converter or SCR system.

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📍 Typical location in IVECO trucks

Usually, between 2 and 4 EGTS sensors are installed, depending on the model and Euro standard:

Example: In an IVECO Stralis Euro 6, there may be 3 sensors: before the DPF, between the DPF and SCR, and after the SCR.

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⚙️ How does it work?

1. The sensor consists of a thermistor (PTC or NTC) or a thermocouple (K-type thermocouple).

2. As the gas temperature rises, its resistance changes or it generates voltage.

3. This change is interpreted by the ECU (engine or aftertreatment) as a temperature value.

4. The ECU uses this information to:

   • Activate or stop active DPF regenerations.

   • Verify the correct operation of the catalytic converter or SCR.

   • Prevent damage from excessive temperatures (e.g., over 700°C).

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📈 Typical temperature ranges

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🚨 Sensor failure symptoms

• DPF regeneration does not activate.

• SCR failures: AdBlue injection is inactive.

• Engine or emissions warning light on.

• Enters limp mode (power reduction).

• Active error codes in diagnostics.

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🛠️ Diagnosis and common codes

With diagnostics (E.A.SY, Jaltest, TEXA):

• You can see the temperature values of each sensor in °C.

• You can check if there are inconsistencies between sensors.

• Frequent codes:

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🔧 Can it be cleaned or repaired?

• They are not cleaned: if they fail, they are replaced.

• They can be checked with a multimeter (when cold, they should show a resistance of approximately 100 to 2000 ohms, depending on the type).

• Check that the wiring is not damaged or burned, especially near the DPF.

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🧠 Tips

• Never ignore a failing EGTS sensor: it affects the entire emissions system.

• In sub-zero temperatures, make sure the SCR system heaters are also working.

• A fixed reading (e.g., constant 0°C or 1000°C) = damaged or disconnected sensor.

Example: 

Model > EUROCARGO 160E22 E6

Chassis > 2549352

Sheet > 50-83-75