Nissan P155b00 Jun 2026

Do not ignore it. Address P155B00 within a few weeks of the first appearance.

—typically points to an issue with the . nissan p155b00

Monitor the readings for NOx sensor 1 (front) and NOx sensor 2 (rear). If a sensor is stuck at a default value (e.g., a constant ppm value that never changes), it is likely faulty. Do not ignore it

The OBD-II scanner often reports this as a PCM error or an invalid signal from a component managed by the powertrain network. nissan p155b00