DTC C1384-04: Pressure Sensor Not Calibrated: General Description

There are three pressure sensors in HPU (Hydraulic Power Unit). They each measure high pressure accumulator pressure, booster pressure, pedal simulator pressure. AHB ECU (Electronic Control Unit) uses these measured values to monitor AHB operating status and control AHB.

After replacing AHB ECU, pressure sensor calibration and PTS calibration are essential.