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Home >> Ford >> 2012 >> Mustang Base, 2D Coupe, Automatic Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 7 (Engine Controls - Powertrain DTC Charts & Descriptions (Diesel)) >> Diagnostic Trouble Code (DTC) Charts and Descriptions >> P204C - REDUCTANT Pressure Sensor Circuit Low

P204C - REDUCTANT Pressure Sensor Circuit Low

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P204C - REDUCTANT PRESSURE SENSOR CIRCUIT LOW

Description:  The powertrain control module (PCM) monitors the reductant pressure sensor circuits 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.
Possible Causes: 
  • RDP circuit open or short to ground
  • VREF circuit open or short to ground
  • Damaged reductant pressure sensor
Diagnostic Aids:  The presence of this DTC may indicate that the vehicle is operating in derate mode and may experience a loss of power.
After repair, the vehicle may still display a reductant system warning message. Drive the vehicle until the reductant system warning message has cleared from the instrument cluster message center.
Application  Key On Engine Off  Key On Engine Running  Continuous Memory 
All GO to PINPOINT TEST RF .