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DTC P0474 - Exhaust Pressure Sensor A Circuit Intermittent/Erratic

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P0474 - EXHAUST PRESSURE SENSOR A CIRCUIT INTERMITTENT/ERRATIC

Description:  This DTC sets when the input signal to the PCM from the exhaust pressure (EP) sensor becomes intermittent or erratic.
Possible Causes: 
  • EP circuit intermittently open
  • Damaged EP sensor
  • Damaged harness connector
  • Damaged harness
Diagnostic Aids:  Check the harness for intermittent concerns, incorrect connections, routing, alterations and damage due to contact with other components.
Application  Key On Engine Off  Key On Engine Running  Continuous Memory 
All GO to PINPOINT TEST X .
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