Dtc P0560 System Voltage

While the engine switch is OFF, battery voltage is supplied to terminal BATT of the ECM for storing DTCs and fuel injection feedback learning values.

Dtc P0087 Fuel Rail / System Pressure - Too Low

The ECM monitors the internal fuel pressure of the common rail using the fuel pressure sensor, and controls the suction control valve to regulate the internal pressure to the target pressure. The pressure sensor is a semiconductor that varies electrical resistance when pressure is applied to its silicon chip. This sensor outputs the voltage in proportion to the internal fuel pressure.

Dtc P0069 Map Sensor Too High Or Too Low

To detect atmospheric pressure, the atmospheric pressure sensor built into the ECM is used in the common rail system. Following the changes in the atmospheric pressure, the ECM corrects the fuel injection volume, timing and duration, and adjusts the common rail internal fuel pressure for optimizing combustion.

Dtc P0544 Exhaust Gas Temperature Sensor Circuit (Bank 1 Sensor 1)

The exhaust gas temperature sensors are installed before and after the DPNR (*1) catalytic converter to sense the exhaust gas temperature.

A thermistor built into the sensor changes its resistance value according to the exhaust gas temperature. The lower the exhaust gas temperature, the greater the thermistor resistance value. The higher the exhaust gas temperature, the lower the thermistor resistance value.

Dtc P0516 Battery Temperature Sensor Circuit Low

The battery thermometer sensor is installed on the battery cover to detect battery temperature.

A thermistor is integrated into the battery thermometer sensor, and the resistance of the battery thermometer sensor changes according to the battery temperature.


The resistance of the thermistor in the battery thermometer sensor decreases as the battery temperature increases. The resistance increases as the temperature decreases.