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P204B (PCM) - Reductant Pressure Sensor Circuit Range/Performance

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DTC DESCRIPTION P204B (PCM) - REDUCTANT PRESSURE SENSOR CIRCUIT RANGE/PERFORMANCE

Description:  The PCM carries out a plausibility check on the reductant pressure sensor during startup after a successful purge cycle, when the reductant pressure line has been drained. This DTC sets when the reductant pressure sensor signal exceeds 30 kPa (4.4 psi).
Possible Causes: 
  • Slow responding reductant pressure sensor
  • Damaged reductant pressure sensor
Diagnostic Aids:  Diagnose and repair all circuit DTCs before diagnosing DTC P204B.
Application  Key On Engine Off  Key On Engine Running  Continuous Memory 
All GO to PINPOINT TEST RF .