P1321
Sistema
Powertrain (Ignition)
Scanner richiesto
Enhanced OBD2 scanner (live data graphs, freeze frame, battery voltage test)

Ignition Coil Power Source Circuit Low (Cylinder 1)

Understand P1321, common causes, and the right FOXWELL scanner to diagnose it.

Ignition coil supply voltage low on cylinder 1 — Nissan and others.

Sintomi comuni

  • Misfire cylinder 1
  • Rough idle
  • P0301

Cause tipiche

  • Short in coil power feed
  • Failed coil driver in ECM
  • Blown fuse for ignition feed

Quale scanner ti serve?

Enhanced OBD2 scanner (live data graphs, freeze frame, battery voltage test)

Usa dati live e freeze frame prima di sostituire componenti. I codici ABS, SRS e U richiedono spesso uno scanner mult sistema.

Consigli diagnostici

  • Registra il freeze frame quando il codice compare la prima volta
  • Cancella il codice solo dopo aver risolto la causa
  • Controlla i codici pending correlati
  • Verifica che la batteria sia sopra 12,4 V prima di sospettare un sensore

Scanner FOXWELL consigliati

Domande frequenti

Can I diagnose P1321 with a basic code reader?
P1321 may set in the engine module, but related diagnostics often benefit from an enhanced or full-system scanner with live data and freeze frame.
Is it safe to drive with P1321?
It depends on the code and symptoms. Flashing check engine lights and misfire codes should be addressed immediately. Consult a professional if unsure.