P047C OBD II Trouble Code Exhaust Pressure Sensor B Low Input

Symptoms of P047C OBD II Trouble Code

  • Check Engine Light illuminated
  • Lack of power
  • Unable to perform manual regeneration ? burn off the soot out of the particulate filter. Looks like a catalytic converter but has temp sensors and pressure sensor probes inserted into it.
  • If unable to perform regeneration, eventually may become a crank-no start.

Common Causes of P047C OBD II Trouble Code

  • Open in the signal circuit between the exhaust pressure sensor and the PCM
  • Open in the power supply circuit between the exhaust pressure sensor and the PCM
  • Short to ground in the signal circuit to the exhaust pressure sensor
  • Exhaust Pressure Sensor faulty ? internally shorted to ground
  • Possibly a powertrain control module (PCM) has failed (highly unlikely)