P155b-00 | Nissan

A message stating "SCR System Fault" or "AdBlue Error" may appear.

to perform a circuit test and verify if the relay is receiving the correct signal from the ECM. for a specific Nissan model? 2026 Nissan LEAF Press Kit nissan p155b-00

: Sometimes, codes in the energy management system are triggered simply because a battery was recently dead, jumped, or swapped without clearing the old adaptations or keeping consistent voltage. 🛠️ Diagnostic & Fix Steps Step 1: Check Battery Health A message stating "SCR System Fault" or "AdBlue