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Nissan - P155b-00

Use a bidirectional scan tool (not just a basic code reader). Clear the code and perform a road test to see if P155B-00 returns immediately.

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Based on the diagnostic trouble code (DTC) format, P155B-00 is a manufacturer-specific code used by Nissan and Infiniti vehicles. nissan p155b-00

Here is a detailed breakdown of the code, its meaning, causes, and diagnosis.

  • Faulty Battery Current Sensor:

  • Wiring Issues:

  • Dead or Weak Battery:

  • ECM Software:

    • P155B-00: ECM (Engine Control Module) / Intelligent Power Module (IPM) / EV/HEV System — often related to a "Current Sensor Circuit Range/Performance" or "Motor Control System" error.

    In many Nissan applications (especially hybrids like the Pathfinder Hybrid, Infiniti QX60 Hybrid, or some newer e-POWER models), this code points to an issue with the motor/generator current sensor inside the IPM (Intelligent Power Module or inverter).

    If you are a DIY mechanic or a professional technician, follow this systematic approach: Use a bidirectional scan tool (not just a basic code reader)