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Exhaust Gas Pressure Sensor Circuit – Shorted Low
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Overview
| CODE | REASON | EFFECT |
| Fault Code: 2374 PID: P095 SPN: 1209 FMI: 4/4 LAMP: Amber SRT: |
Exhaust gas pressure sensor circuit – shorted low. Low voltage detected on the exhaust gas pressure sensor exhaust circuit. |
Engine power derate. |
 Exhaust Gas Pressure Sensor Circuit
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Circuit Description
The exhaust gas pressure sensor measures the pressure of the gas in the exhaust manifold and passes that information to the electronic control module (ECM) through the engine harness. This information is used by the ECM to control emissions and for valve operation. If the exhaust gas pressure becomes too low, it will cause a derate condition.
Component Location
The exhaust gas pressure sensor is located on the EGR cooler on the exhaust side of the engine. Refer to Procedure 100-002 for a detailed component location view.
Shop Talk
The exhaust gas pressure sensor shares supply and return wires in the engine harness with other sensors. Opens and shorts in the engine harness can cause multiple fault codes to become active.
Possible causes of this fault code include:
- Signal wire open or shorted to ground in the harness
- Supply line open or shorted to ground
- Sensor shorted to ground.
Refer to Troubleshooting Fault Code t05-2374
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