Ford Code P204C is an error code for a vehicle’s reductant pressure sensor circuit. It is a diagnostic trouble code (DTC) that indicates a powertrain control module (PCM) monitors the reductant pressure sensor circuit to the PCM for high and low voltage. The test fails if the voltage exceeds or falls below a calibrated limit for a calibrated amount of time. The manufacturer’s service bulletins related to this code are 19-2315, 21-2336, 22-2191, SSM44458, SSM45013, and SSM45226. This article will provide a comprehensive overview of Ford Code P204C, explaining why this code appears, its associated symptoms, the possible causes of the code, and the solutions and repair options that can be implemented to rectify it.
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Causes and Solutions for Ford Code P204C
| Cause | Solution |
|---|---|
| Defects in the reductant pressure sensor | Replace the reductant pressure sensor |
| Defective wiring or connectors | Check wiring and connectors and replace faulty components |
| Damaged PCM | Reinstall the PCM software or replace the PCM |
| Defective reductant pressure sensor circuit | Check the reductant pressure sensor circuit for faults and repair or replace as necessary. |
Defects in the Reductant Pressure Sensor
The most common cause of Ford Code P204C is a defect in the reductant pressure sensor. The reductant pressure sensor measures the pressure of the reductant in the vehicle’s exhaust system. It then sends a signal to the PCM to inform it of any changes in the force. If the pressure sensor is defective, it may not be able to detect the pressure accurately and may cause the code P204C to be triggered. The only solution for this is to replace the reductant pressure sensor.
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Defective Wiring or Connectors
Another potential cause of Ford Code P204C is defective wiring or connectors. The reductant pressure sensor is connected to the PCM via a wiring harness. If there is any damage to the wiring or connectors, it can cause the code to be triggered. To repair this, technicians must inspect the wiring and connectors and replace faulty components.
Damaged PCM
If the PCM is damaged, it can cause the Ford Code P204C to be triggered. The PCM can be damaged due to a software issue, power surge, or physical damage. To fix this, the technician must reinstall the PCM software or replace the PCM.
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Defective Reductant Pressure Sensor Circuit
The last potential cause of Ford Code P204C is a defective reductant pressure sensor circuit. A defective circuit can cause an open or short circuit, triggering the code. To repair this, technicians must inspect the reductant pressure sensor circuit for faults and repair or replace it as necessary.
Conclusion
Ford Code P204C is an error code triggered when the PCM detects a problem with the reductant pressure sensor circuit. The four most common causes of this code are defects in the reductant pressure sensor, defective wiring or connectors, a damaged PCM, and a defective reductant pressure sensor circuit. To rectify the issue, technicians must diagnose the code using a diagnostic scanner and repair or replace the faulty components. The Ford Code P204C should be taken seriously and addressed as soon as possible to ensure the safety and reliability of the vehicle.
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