Pinpoint Test RF: REDUCTANT Pressure Sensor
WARNING: This page is about a different car, the 2021 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
Regeneration may occur during normal operation. During regeneration, diagnostic procedures may display biased values. If a regeneration occurs during diagnostic procedures, allow the process to complete before continuing diagnostics.
Refer to Wiring Diagrams ELECTRONIC ENGINE CONTROLS - 3.0L DIESEL for schematic and connector information.
Normal Operation and Fault Conditions
Refer to the DTC Fault Trigger Conditions.
DTC Fault Trigger Conditions
| DTC | Description | Fault Trigger Condition |
|---|---|---|
| PCM P204C:00 | Reductant Pressure Sensor Circuit Low: No Sub Type Information | Sets when the PCM detects the reductant pressure sensor voltage is greater than or less than a calibrated limit for a calibrated amount of time. The presence of this DTC may indicate the vehicle is operating in derate mode and may experience a loss of power. After repair, the vehicle may still display a system warning message. Drive the vehicle until the system warning message has cleared from the IPC message center. |
| PCM P204D:00 | Reductant Pressure Sensor Circuit High: No Sub Type Information | Sets when the PCM detects the reductant pressure sensor voltage is greater than or less than a calibrated limit for a calibrated amount of time. The presence of this DTC may indicate the vehicle is operating in derate mode and may experience a loss of power. After repair, the vehicle may still display a system warning message. Drive the vehicle until the system warning message has cleared from the IPC message center. |
Possible Sources
- Reductant pressure sensor circuitry concern
- Reductant pressure sensor
- PCM (12A650)