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P0643 2012 NISSAN ROGUE

P0643 2012 NISSAN ROGUE - Sensor Power Supply Circuit Short

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3  What does this mean?

Possible causes

  • Faulty Engine Control Module (ECM)
  • ECM harness is open or shorted
  • ECM circuit poor electrical connection
  • Shorted sensor on 5 volt circuit
  • Accelerator pedal position sensor (APP sensor 1)
  • Power steering pressure sensor
  • EVAP control system pressure sensor
  • Refrigerant pressure sensor
  • When is the code detected?

    The Engine Control Module (ECM) has detected the sensor 5 volt reference circuit voltage is higher than expected

    Possible symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)
  • P0643 2012 Nissan Rogue Description

    The control module has 2 internal 5-volt reference buses called 5-volt reference 1 and 5-volt reference 2 . Each reference bus provided 5-volt reference circuit for more than one sensor. Therefore, a fault condition on one 5-volt reference circuit will affect the other 5-volt reference circuits connected to the reference bus. The control module monitors the voltage on the 5-volt reference buses.
    OBDII Code P0643 2012 Nissan Rogue - Sensor Power Supply Circuit Short - Engine-Codes.com

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