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Recirculation Exhaust Gas Temperature Sensor Circuit – Voltage Below Normal or Shorted to Low Source
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Overview
| CODE | REASON | EFFECT |
| Fault Code: 2376 PID: P412 SPN: 412 FMI: 4/4 LAMP: Amber SRT: |
Recirculation Exhaust Gas (EGR) Temperature Sensor Circuit – Voltage Below Normal or Shorted to Low Source. Low signal voltage detected at the EGR temperature circuit. |
EGR valve will be closed. |
 EGR Temperature Sensor Circuit
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Circuit Description
The EGR temperature sensor is used to measure the temperature of the exhaust gas that exits the EGR cooler. The electronic control module (ECM)
uses this temperature to control the emission levels of the engine.
Component Location
The EGR temperature sensor is located in the intake air horn at the front of the engine. Refer to Procedure 100-002 for a detailed component location view.
Shop Talk
This fault code is set active if the sensor signal voltage is below the normal operating range for the sensor and the electronic control module
(ECM) has commanded the EGR valve open. This fault code will not
be set active if the ECM has commanded the EGR valve closed. However, once the fault code is set, it will remain active independent of whether the EGR valve is open or closed.
The EGR temperature sensor shares return wires in the engine harness with other sensors. An shorted return can cause multiple fault codes to be active. Before troubleshooting Fault Code 2376, check for multiple fault codes.
Possible causes of this fault code include:
- Signal shorted to ground in the harness or ECM
- Signal shorted to return or ground in the sensor.
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Temperature (°C)
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Temperature (°F)
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Resistance (ohms)
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0
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32
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256k to 423k
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20
|
68
|
99k to 154k
|
|
40
|
104
|
42k to 63k
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100
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212
|
5.5k to 7.1k
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|
140
|
284
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1.9k to 2.3k
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|
200
|
392
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520 to 580
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Refer to Troubleshooting Fault Code t05-2376
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