What causes P1479 on a Ford?

Failed high-speed fan relay Open or shorted high fan control circuit Seized high-speed fan motor Blown high fan fuse PCM driver fault

How do I fix P1479 on a Ford?

Command the high fan on and verify operation Load-test the relay and fuse Check motor power and ground during command Inspect the motor for seizure or burnt odor Replace the failed relay, motor or wiring

P1479 High Fan Control Primary Circuit Malfunction

Q: What does P1479 mean on a Ford?

P1479 — High Fan Control Primary Circuit Malfunction. Applies to Taurus, Mustang, Focus, Escape with electric cooling fans.

Category: Powertrain - Computer and Auxiliary Controls
Severity: Check Engine Light
Applies to: Taurus, Mustang, Focus, Escape with electric cooling fans

What does P1479 mean on a Ford?

P1479 — High Fan Control Primary Circuit Malfunction. This Ford-enhanced code applies to Taurus, Mustang, Focus, Escape with electric cooling fans.

Common causes of P1479

Failed high-speed fan relay
Open or shorted high fan control circuit
Seized high-speed fan motor
Blown high fan fuse
PCM driver fault

How to fix P1479

Command the high fan on and verify operation
Load-test the relay and fuse
Check motor power and ground during command
Inspect the motor for seizure or burnt odor
Replace the failed relay, motor or wiring