Nissan P155b-00 =link=

The "P155B" prefix indicates a manufacturer-specific code rather than a generic OBD-II code (which usually starts with P0). In the context of Nissan’s SCR system:

Have you encountered the P155B-00 code in your Nissan? Share your experiences, symptoms, and repair stories in the comments below. This can help others who may be facing similar issues. nissan p155b-00

The engine's computer (ECM) has detected that the heater responsible for keeping the AdBlue fluid from freezing or maintaining its operating temperature is not performing correctly. This can help others who may be facing similar issues

: Loose, corroded, or broken wiring and pins surrounding the battery sensor or the ECM power supply. Recent Battery Replacement or Disconnection white smoke from the exhaust

Using a multimeter:

Because the air inside the cylinders isn't hot enough, the diesel doesn't ignite properly. This leads to rough idling , white smoke from the exhaust, and eventually, the Check Engine Light glowing on your dash.