This code indicates a voltage irregularity or performance issue in the power supply circuit shared between the Engine Control Module (ECM), Body Control Module (BCM), Intelligent Power Distribution Module Engine Room (IPDM E/R), and the Steering Angle Sensor.
ECM / BCM / IPDM E/R / Steering Angle Sensor – Battery Voltage / Power Supply Circuit Range / Performance nissan p155b-00
Here’s a clear, professional text for : Diagnostic Trouble Code (DTC): P155B-00 This code indicates a voltage irregularity or performance