What causes P1379 on a Ford?

Failing FICM voltage regulator Charging system overvoltage Poor FICM ground raising the reading Internal FICM fault Wiring short to power

How do I fix P1379 on a Ford?

Verify charging voltage is not excessive Measure FICM output voltage directly Check FICM grounds Inspect wiring for shorts to power Replace the FICM if output stays high

P1379 Fuel Injection Control Module Circuit High Voltage

Q: What does P1379 mean on a Ford?

P1379 — Fuel Injection Control Module Circuit High Voltage. Applies to F-250/F-350 Super Duty with 6.0L Power Stroke.

Category: Powertrain - Fuel/Air Metering
Severity: Check Engine Light
Applies to: F-250/F-350 Super Duty with 6.0L Power Stroke

What does P1379 mean on a Ford?

P1379 — Fuel Injection Control Module Circuit High Voltage. This Ford-enhanced code applies to F-250/F-350 Super Duty with 6.0L Power Stroke.

Common causes of P1379

Failing FICM voltage regulator
Charging system overvoltage
Poor FICM ground raising the reading
Internal FICM fault
Wiring short to power

How to fix P1379

Verify charging voltage is not excessive
Measure FICM output voltage directly
Check FICM grounds
Inspect wiring for shorts to power
Replace the FICM if output stays high