P0231 Lincoln 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 Lincoln 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 Lincoln Description
What are the Possible Causes of the DTC P0231 Lincoln?
- Blown Fuel Pump fuse
- Open Fuel Pump Monitor Circuit
- Faulty Fuel Pump Relay
- Damaged Engine Control Module (ECM)
How to Fix the DTC P0231 Lincoln?
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 the voltage of the circuit between inertia switch harness connector and ground
4. If battery voltage is found, replaced Inertia Switch
5. Clear codes.
User Submitted Video
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0231 Lincoln 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 Lincoln Code
1. What are the common symptoms of OBDII code P0231 in a Lincoln related to the Fuel Pump Secondary Circuit Low?
- Common symptoms include engine stalling, difficulty starting the vehicle, and a noticeable decrease in engine performance.
2. What are the potential causes of the Fuel Pump Secondary Circuit Low OBDII code in a Lincoln?
- Possible causes include a faulty fuel pump relay, damaged wiring or connectors in the fuel pump circuit, or a malfunctioning fuel pump driver module.
3. How can I diagnose the issue causing the OBDII code P0231 in my Lincoln?
- Diagnose the issue by checking the fuel pump relay, inspecting the wiring and connectors for any damage, and testing the fuel pump driver module for proper function.
4. Can a clogged fuel filter cause the OBDII code P0231 in a Lincoln?
- While a clogged fuel filter can contribute to fuel delivery issues, it is not a direct cause of the Fuel Pump Secondary Circuit Low code. Focus on checking the fuel pump circuit components first.
5. What are some repair tips for addressing the Fuel Pump Secondary Circuit Low code in a Lincoln?
- Repair tips include checking and replacing the fuel pump relay, repairing any damaged wiring or connectors, and testing or replacing the fuel pump driver module if necessary.
6. Is it safe to continue driving my Lincoln with the P0231 code related to the Fuel Pump Secondary Circuit Low?
- It is not recommended to continue driving the vehicle with this code, as it can lead to further damage and potentially leave you stranded due to fuel delivery issues.
7. Will resetting the OBDII code P0231 in my Lincoln make the issue go away?
- Simply resetting the code will not fix the underlying problem causing the Fuel Pump Secondary Circuit Low issue. Proper diagnosis and repair are necessary to resolve the issue.
8. Can weather conditions or temperature affect the occurrence of the P0231 code in a Lincoln?
- Extreme weather conditions or temperature fluctuations can sometimes affect the performance of the fuel pump circuit components, potentially triggering the P0231 code.
9. How long does it typically take to repair the Fuel Pump Secondary Circuit Low issue in a Lincoln?
- The repair time can vary depending on the exact cause of the issue. Simple fixes like replacing a relay may take less than an hour, while diagnosing and repairing wiring issues could take longer.
10. Is it possible to prevent the OBDII code P0231 related to the Fuel Pump Secondary Circuit Low from occurring in my Lincoln?
- While some causes are unavoidable, regular maintenance, such as checking and replacing the fuel filter as recommended, can help prevent issues that may lead to the P0231 code.
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