P1246 Alternator Load Input Failed

Category: Powertrain - Computer and Auxiliary Controls
Severity: Check Engine Light
Applies to: F-150, Explorer, Taurus

What does P1246 mean on a Ford?

P1246 — Alternator Load Input Failed. This Ford-enhanced code applies to F-150, Explorer, Taurus.

Common causes of P1246

Intermittent load sense connection
Failing current sensor
Chafed sense wiring
Corroded terminals
PCM input fault

How to fix P1246

Wiggle-test the sense harness
Monitor load input for dropouts
Clean terminals
Inspect routing for chafing
Replace the sensor if dropouts persist