P1553 INFINITI, NISSAN: BATTERY CURRENT SENSOR PERFORMANCE
POST UPDATED IN May, 2023
P1553 INFINITI, NISSAN: BATTERY CURRENT SENSOR PERFORMANCE
With the variable power generation voltage control, fuel consumption can be significantly decreased by reducing the engine load that is caused by generator power output. The Battery Current Sensor is installed on the battery negative terminal cable, whose basic function is to measure the battery charge/discharge current.
The information gathered by the Battery Current Sensor is sent to the ECM, which then determines whether or not variable power generation voltage control is required. In performing such control, the ECM can calculate the voltage based on the data received by the sensor, and this calculated value is provided as the power generation command value to IPDM E/R.
On Infiniti and Nissan vehicles, if the P1553 OBDII diagnostic code is set, it is because the ECM detected a performance problem from the Battery Current Sensor. This fault occurs when the signal voltage transmitted from the sensor to the ECM exceeds the maximum power generation amount.
The reasons why the P1553 OBD2 fault code is set are:
To troubleshoot the DTC P1553 OBDII code you must do the following: