P1E20 – Auxiliary Transmission Fluid Pump Control Module Hybrid/EV Battery Voltage Sense Circuit Low Voltage

P1E20 Possible Symptoms

Engine Light ON (or Service Engine Soon Warning Light)

P1E20 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

P1E20 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. Each drive motor control module monitors its internal high voltage sensor for correct operation, no external circuits are involved. The motor control modules and the hybrid powertrain control module are part of the power inverter module and are not serviced separately.