P1232 Low Speed Fuel Pump Primary Circuit Failure

Category: Powertrain - Fuel/Air Metering
Severity: Check Engine Light
Applies to: F-150, Explorer, Ranger, Taurus with two-speed pumps

What does P1232 mean on a Ford?

P1232 — Low Speed Fuel Pump Primary Circuit Failure. This Ford-enhanced code applies to F-150, Explorer, Ranger, Taurus with two-speed pumps.

Common causes of P1232

Open low-speed primary circuit
Failed low-speed relay
Burned resistor in the low-speed path
Corroded circuit connections
PCM driver fault

How to fix P1232

Test low-speed relay operation
Check resistor continuity
Voltage-drop the primary circuit
Clean connections
Replace the relay or resistor per tests