P0231 2003 Ford F150 Code - Fuel Pump Secondary Circuit Low
Quick Answer
The Engine Control Module (ECM) provides ignition positive voltage to the coil side of the fuel pump relay. Common causes include Blown Fuel Pump fuse, Open Fuel Pump Monitor Circuit, Faulty Fuel Pump Relay. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P0231 2003 Ford F150 indicates Fuel Pump Secondary Circuit Low .
- Common causes
- Common causes include Blown Fuel Pump fuse, Open Fuel Pump Monitor Circuit, Faulty Fuel Pump Relay.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code P0231 2003 Ford F150 Description
What are the Possible Causes of the DTC P0231 2003 Ford F150?
- Blown Fuel Pump fuse
- Open Fuel Pump Monitor Circuit
- Faulty Fuel Pump Relay
- Damaged Engine Control Module (ECM)
How to Fix the DTC P0231 2003 Ford F150?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
Code Tech Notes
1. Disconnect the inertia switch harness connector
2. Turn key to ON position (Engine OFF)
3. Measure voltage of circuit between inertia switch harness connector and ground
4. If battery voltage is found, replaced Inertia Switch
5. Clear codes
For natural gas applications, the following description applies to the fuel shutoff valve monitor (FSVM) and the fuel shutoff valve power (FSV PWR) circuits.
The PCM monitors the fuel pump monitor (FPM) circuit. The test fails if the PCM commands the fuel pump ON and B+ voltage is not detected on the FPM circuit.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0231 2003 Ford F150 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Frequently Asked Questions about P0231 2003 Ford F150 Code
1. What are the common symptoms of OBDII code P0231 on a 2003 Ford F150 related to the Fuel Pump Secondary Circuit Low?
- Common symptoms include difficulty starting the vehicle, engine stalling, and a lack of power when accelerating.
2. What are the possible causes of OBDII code P0231 on a 2003 Ford F150 indicating a Fuel Pump Secondary Circuit Low?
- Possible causes include a faulty fuel pump, damaged wiring or connectors in the fuel pump circuit, or a malfunctioning fuel pump relay.
3. How can I diagnose the issue causing OBDII code P0231 on my 2003 Ford F150 related to the Fuel Pump Secondary Circuit Low?
- You can diagnose the issue by checking the fuel pump fuse, inspecting the wiring and connectors for damage, testing the fuel pump relay, and using a multimeter to measure voltage in the circuit.
4. Can a clogged fuel filter trigger OBDII code P0231 on a 2003 Ford F150 indicating a Fuel Pump Secondary Circuit Low?
- Yes, a clogged fuel filter can restrict fuel flow to the fuel pump, causing it to work harder and potentially trigger the P0231 code.
5. What is the typical repair process for resolving OBDII code P0231 on a 2003 Ford F150 related to the Fuel Pump Secondary Circuit Low?
- The typical repair process involves checking and replacing the fuel pump fuse, repairing any damaged wiring or connectors, testing and replacing the fuel pump relay if necessary, and inspecting the fuel pump for proper operation.
6. Is it safe to continue driving my 2003 Ford F150 with OBDII code P0231 indicating a Fuel Pump Secondary Circuit Low?
- It is not recommended to continue driving the vehicle with this code, as it can lead to fuel delivery issues and potential engine damage if left unresolved.
7. Can extreme weather conditions cause OBDII code P0231 on a 2003 Ford F150 related to the Fuel Pump Secondary Circuit Low?
- Extreme weather conditions, such as extreme heat or cold, can potentially affect the performance of the fuel pump and trigger the P0231 code.
8. Will resetting the OBDII code P0231 on my 2003 Ford F150 fix the issue related to the Fuel Pump Secondary Circuit Low?
- Resetting the code may temporarily clear the warning light, but it will not fix the underlying issue causing the P0231 code to appear.
9. How much does it typically cost to repair OBDII code P0231 on a 2003 Ford F150 indicating a Fuel Pump Secondary Circuit Low?
- The cost of repairing the P0231 code can vary depending on the specific cause, but it may range from $200 to $500 or more, including parts and labor.
10. Can a DIY enthusiast fix OBDII code P0231 on a 2003 Ford F150 related to the Fuel Pump Secondary Circuit Low?
- While some aspects of diagnosing and repairing the issue can be tackled by a DIY enthusiast, it is recommended to seek professional help for complex electrical or fuel system repairs to ensure proper resolution.
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