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Exhaust Gas Pressure Sensor Circuit
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Overview
| CODE | REASON | EFFECT |
| Fault Code: 2373 PID: P95 SPN: 1209 FMI: 3/3 LAMP: Amber SRT: |
Exhaust Gas Pressure Sensor Circuit – shorted high. High signal voltage detected at exhaust gas pressure circuit. |
Engine power derate. |
 Exhaust Gas Pressure Sensor Circuit
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Circuit Description
The exhaust gas pressure sensor is used to measure exhaust gas pressure in the exhaust manifold. This information is used by the ECM to control emissions and EGR valve operation.
Component Location
The exhaust gas pressure sensor is located above the front section of the exhaust manifold and is plumbed into the exhaust manifold between the number 1 and number 2 cylinders. Refer to Section E 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 be active.
Possible causes of this fault code include:
- Open return circuit in the engine harness, connectors, or sensor.
- Signal wire shorted to sensor supply or battery voltage.
Refer to Troubleshooting Fault Code t05-2373
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