C2420 – Motor Temperature Sensor High Input

C2420 Possible Symptoms

Anti-Lock Brake System (ABS) Warning Light ON,Engine Light ON (or Service Engine Soon Warning Light)

C2420 Possible Causes

Contamination of Oil/Clog of Oil path,Faulty Motor Pump Unit (MPU),Motor Pump Unit (MPU) harness is open or shorted,Motor Pump Unit (MPU) circuit poor electrical connection

C2420 Description

The Electro Hydraulic Power Steering (EHPS) is assistance steering ability system uses an electrical motor that generates oil pressure not to use the Engine power. The Temperature Sensor is installed in the Motor Pump Unit (MPU) in order to measure oil temperature, This sensor uses a thermistor whose resistance changes according to the temperature changes. The MPU ECU perform limit current control to prevent from over-heating and motor speed control according to viscosity changes. This Diagnostic Trouble Code (DTC) code is set when supplied over current or input too high temperature to MPU ECU, in order to protect MPU ECU. The MPU not perform EHPS control.