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P1E2A - Auxiliary Transmission Fluid Pump Phase U Current Sensor Circuit Low Voltage

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3   
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Possible causes

  • Program Power Inverter Module
  • Faulty Power Inverter Module
  • Power Inverter Module harness is open or shorted
  • Power Inverter Module circuit poor electrical connection
  • Possible symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)
  • P1e2a Description

    The power inverter module, often referred to as the drive motor generator power inverter module, contains three motor control modules and the hybrid powertrain control module. Two of the motor control modules operate their respective drive motor generator based upon power inverter module commands. The third motor control module controls the auxiliary transmission fluid pump motor. This is an internal fault detection of the power inverter module. This fault is handled inside the power inverter module and no external circuits are involved.

    Each motor control module operates its respective drive motor based upon hybrid powertrain control module commands. Each motor control module controls its respective motor through the sequencing actuation of high-current switching transistors called insulated gate bipolar transistors. Each motor operates utilising 3-phase alternating current AC electricity. Each insulated gate bipolar transistor operates a single phase of the drive motor generator. Each phase is individually identified as U, V and W. Each motor control module monitors the current of each phase in order to detect out of range current conditions.

    Because each individual motor's phase circuits are electrically joined together, the phases normally flow about the same amount of current. The motor control module performs a mathematical calculation to verify that the phase current sensors are accurate. If the U-V-W phase current sensors indicate about the same amount of phase current, the sum of the calculation should be near zero. If the U-V-W phase currents are not similar, this DTC will set.

    OBDII Code P1e2a - Auxiliary Transmission Fluid Pump Phase U Current Sensor Circuit Low Voltage - AutoCodes.com

    P1E2A Information for specific makes

  • P1E2A ACURA Brake Fluid Pressure Sensor PUR Circuit Low Voltage
  • P1E2A BUICK Auxiliary Transmission Fluid Pump Phase U Current Sensor Circuit Low Voltage
  • P1E2A CADILLAC Auxiliary Transmission Fluid Pump Phase U Current Sensor Circuit Low Voltage
  • P1E2A CHEVROLET Auxiliary Transmission Fluid Pump Phase U Current Sensor Circuit Low Voltage
  • P1E2A GMC Auxiliary Transmission Fluid Pump Phase U Current Sensor Circuit Low Voltage
  • P1E2A HONDA Brake Fluid Pressure Sensor PUR Circuit Low Voltage
  • P1E2A SATURN Auxiliary Transmission Fluid Pump Phase U Current Sensor Circuit Low Voltage
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    Related Information

    P1E2A Comments

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    Repair Importance Level: 3
     
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    Repair Difficulty Level: 3
     
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