How do you fix the P1450 code on a Ford?

Alton Alexander
By Alton AlexanderUpdated on June 4th, 2022

P1450 Ford is a diagnostic trouble code (DTC) for "Fuel Level Sensor Circuit Malfunction". This code is set when the powertrain control module (PCM) detects a problem with the fuel level sensor or the circuit that it is operating in. There are a few different things that can cause this code to set, but the most common is a problem with the fuel level sensor itself. Other possible causes include a short in the sensor circuit or a problem with the PCM.

Users typically search for a solution by asking about:

  • error code p1450
  • p1450 ford

1. Replace the PCM

  1. Disconnect the negative battery cable.
  2. Remove the two screws securing the PCM to the engine bay.
  3. Pry off the PCM with a sharp object.
  4. Carefully remove the PCM and replace it with a new one.
  5. Replace the screws and reattach the negative battery cable.

2. Replace the fuel pump

  1. Remove the fuel pump cover.
  2. Remove the fuel pump.
  3. Remove the bolt securing the pump to the fuel tank.
  4. Remove the pump seal.
  5. Clean and inspect the pump internals.
  6. Replace the pump seal, if necessary.
  7. Install the pump bolt and tighten to specification.
  8. Reinstall the fuel pump cover.

3. Replace the fuel filter

  1. Open the hood and locate the fuel filter. It is located on the left side of the engine near the firewall.
  2. Remove the fuel filter by unscrewing it.
  3. Clean the fuel filter element with a damp cloth and a solvent such as gasoline.
  4. Reinstall the fuel filter by screwing it in place.
  5. Reconnect the fuel line and engine wiring.
  6. Close the hood.

4. Replace the fuel pressure regulator

  1. Shut off the engine and remove the fuel line from the fuel pressure regulator.
  2. Remove the fuel pressure regulator.
  3. Clean the fuel pressure regulator and replace the O-ring if necessary.
  4. Reinstall the fuel pressure regulator.
  5. Reconnect the fuel line to the fuel pressure regulator.
  6. Start the engine and check the fuel pressure.

5. Clean the fuel injectors

  1. Check the fuel pressure. If it is low, the fuel injectors may be dirty.
  2. Remove the fuel injectors. If they are dirty, use a clean cloth to clean them.
  3. Check the fuel lines for debris. If they are clogged, use a wire brush to clean them.
  4. Reinstall the fuel injectors.

6. Replace the O2 sensor

  1. Park the car in a safe location.
  2. Disable the security system.
  3. Open the hood.
  4. Locate the O2 sensor.
  5. Disconnect the sensor from the wiring harness.
  6. Remove the sensor from the car.
  7. Clean the sensor and the mounting surface.
  8. Apply a new adhesive to the sensor and mount it to the car.
  9. Reconnect the wiring harness.
  10. Disable the security system.

Some users might also have success with the following opitons:

  1. Check for vacuum leaks
  2. Check for fuel leaks
  3. Check the fuel pressure