When Jeep drivers encounter the P2455 code, it can be a worrying experience. This code means that the Diesel Particulate Filter has experienced a differential pressure sensor circuit that is higher than expected. The Diesel Particulate Filter is an in-line canister filter located in the exhaust system between the engine and the muffler. This filter is monitored by the Powertrain Control Module (PCM) with a Differential Pressure Sensor. It captures and stores soot particles created by the diesel combustion process and is a vital component for a Jeep vehicle’s performance and emissions.
Causes and Solutions for Jeep P2455 Code
| Cause | Solution |
|---|---|
| (K354) EXHAUST DIFFERENTIAL PRESSURE SENSOR 5-VOLT SUPPLY CIRCUIT SHORTED TO VOLTAGE | Check the voltage supply to the differential pressure sensor. |
| (K355) EXHAUST DIFFERENTIAL PRESSURE SENSOR SIGNAL CIRCUIT SHORTED TO VOLTAGE | Verify the signal circuit to the differential pressure sensor is not shorted to voltage. |
| (K951) EXHAUST DIFFERENTIAL PRESSURE SENSOR GROUND CIRCUIT OPEN/HIGH RESISTANCE | Check the ground circuit to the differential pressure sensor. |
| EXHAUST DIFFERENTIAL PRESSURE SENSOR | Replace the differential pressure sensor if necessary. |
| POWERTRAIN CONTROL MODULE (PCM) | Replace the PCM if necessary. |
K354 EXHAUST DIFFERENTIAL PRESSURE SENSOR 5-VOLT SUPPLY CIRCUIT SHORTED TO VOLTAGE
When the 5-volt supply circuit to the differential pressure sensor is shorted to voltage, it can cause the P2455 code to be triggered. This is one of the most common causes of this code. When this code is triggered, it is important to check the voltage supply to the differential pressure sensor. If the voltage supply is not at the expected level, then the 5-volt supply circuit may need to be repaired.
K355 EXHAUST DIFFERENTIAL PRESSURE SENSOR SIGNAL CIRCUIT SHORTED TO VOLTAGE
Another common cause of the P2455 code is when the signal circuit to the differential pressure sensor is shorted to voltage. When this code is triggered, it is important to verify that the signal circuit is not shorted to voltage. If there is a short in the circuit, it needs to be repaired in order for the code to be cleared.
K951 EXHAUST DIFFERENTIAL PRESSURE SENSOR GROUND CIRCUIT OPEN/HIGH RESISTANCE
When the ground circuit to the differential pressure sensor is open or has a high resistance, it can cause the P2455 code to be triggered. This is another common cause of this code. When this code is triggered, it is important to check the ground circuit to the differential pressure sensor. If the ground circuit is not at the expected level, then the ground circuit may need to be repaired.
EXHAUST DIFFERENTIAL PRESSURE SENSOR
If the differential pressure sensor itself is not functioning correctly, it can cause the P2455 code to be triggered. In this case, the differential pressure sensor needs to be replaced in order for the code to be cleared.
POWERTRAIN CONTROL MODULE (PCM)
Finally, if the Powertrain Control Module (PCM) is not functioning correctly, it can cause the P2455 code to be triggered. In this case, the PCM needs to be replaced in order for the code to be cleared.
Conclusion
In conclusion, when Jeep drivers encounter the P2455 code, it is important to diagnose the cause of the code in order to clear it. Common causes of this code include a 5-volt supply circuit that is shorted to voltage, a signal circuit that is shorted to voltage, a ground circuit that is open or has a high resistance, a faulty differential pressure sensor, and a faulty Powertrain Control Module (PCM). If any of these components are not functioning correctly, the Jeep P2455 Code needs to be repaired in order to clear it.
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