P1246 – Alternator Load Signal (Nissan)

Description

The ECM detected an abnormal alternator load signal.

Need More Than Just the Fault Code?

A diagnostic scanner with live data, freeze-frame information and the right system access can help you investigate the actual cause before replacing parts.

Compare Diagnostic Scanners

Symptoms

  • Battery warning light
  • Dimming lights
  • Charging issues

Causes

  • Faulty alternator
  • Wiring issues
  • ECM signal fault

Diagnosis

  • Check alternator output
  • Inspect wiring
  • Scan live data

Repair

  • Replace alternator
  • Repair wiring