: On newer models, this system may be disabled because the ECM cannot accurately verify the battery's state of charge. Potential Causes
: Check the battery terminals for white or green powdery buildup. Cleaning these with a wire brush and a mixture of baking water and soda is a common first fix.
: After repairs, use an OBD-II scanner to clear the code and perform a drive cycle to see if the light returns. nissan p155b-00
When your vehicle's computer (PCM/ECM) detects a voltage signal from the battery current sensor that is outside of the expected range, it triggers the P155B-00 code and illuminates the .
: Frayed, broken, or shorted wires in the sensor's harness. : On newer models, this system may be
If you encounter this code, following these steps can help identify the root cause:
While the most immediate sign is a warning light, you may also experience: : After repairs, use an OBD-II scanner to
: You might notice flickering lights or a weak battery if the alternator isn't charging correctly.
: A failing battery that cannot maintain proper voltage may lead the sensor to report "out of range" values. Diagnostic and Repair Steps