What causes P1106 on a Ford?

Failed lower alternator Open field circuit to the lower unit Oil or road splash contaminating the lower unit Corroded lower charge cables PCM driver fault

How do I fix P1106 on a Ford?

Test each alternator output separately Inspect the lower unit for contamination and corrosion Check field control and charge wiring Clean all cable connections Replace the lower alternator if its circuit tests good

P1106 Dual Alternator Lower Malfunction

Q: What does P1106 mean on a Ford?

P1106 — Dual Alternator Lower Malfunction. Applies to Super Duty and E-Series with dual alternator packages.

Category: Powertrain - Computer and Auxiliary Controls
Severity: Check Engine Light
Applies to: Super Duty and E-Series with dual alternator packages

What does P1106 mean on a Ford?

P1106 — Dual Alternator Lower Malfunction. This Ford-enhanced code applies to Super Duty and E-Series with dual alternator packages.

Common causes of P1106

Failed lower alternator
Open field circuit to the lower unit
Oil or road splash contaminating the lower unit
Corroded lower charge cables
PCM driver fault

How to fix P1106

Test each alternator output separately
Inspect the lower unit for contamination and corrosion
Check field control and charge wiring
Clean all cable connections
Replace the lower alternator if its circuit tests good