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P0628 Dodge Code - Low Voltage Detected At The Fuel Lift Pump

Quick Answer

The P0628 code for Dodge vehicles indicates that the Engine Control Module (ECM) has detected low voltage at the fuel lift pump. Common causes include Faulty fuel lift pump, Wiring or connection issues, Blown fuse related to the fuel lift pump. 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
P0628 Dodge indicates Low Voltage Detected At The Fuel Lift Pump.
Common causes
Common causes include Faulty fuel lift pump, Wiring or connection issues, Blown fuse related to the fuel lift pump.
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.
What is this?
Table of contents Created and updated by William Orellana on Aug 25, 2024
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Code P0628 Dodge Description

The P0628 code for Dodge vehicles indicates that the Engine Control Module (ECM) has detected low voltage at the fuel lift pump. The fuel lift pump is responsible for supplying fuel from the fuel tank to the engine. When the ECM detects low voltage at the fuel lift pump, it means that the pump is not receiving the necessary power to function properly. This can lead to issues with fuel delivery to the engine, potentially causing poor engine performance, stalling, and even engine failure if not addressed.

OBDII Code P0628 Dodge - Low Voltage Detected At The Fuel Lift Pump
P0628 Dodge Code - Low Voltage Detected At The Fuel Lift Pump

Common Causes of P0628 Dodge

  1. Faulty fuel lift pump
  2. Wiring or connection issues
  3. Blown fuse related to the fuel lift pump
  4. Faulty ECM
  5. Electrical issues in the fuel pump circuit

Symptoms of P0628 Dodge

  1. Engine stalling or hesitation
  2. Difficulty starting the engine
  3. Poor fuel efficiency
  4. Engine misfires
  5. Illuminated check engine light

How to Fix P0628 Dodge

  1. Begin by checking the fuel lift pump and its connections for any visible damage or issues.
  2. Test the fuel lift pump's voltage and current to determine if it is receiving the proper power supply.
  3. Inspect the wiring and connections related to the fuel lift pump for any signs of damage or corrosion.
  4. Replace any faulty components such as the fuel lift pump, fuses, or wiring as necessary.
  5. Clear the diagnostic trouble codes from the ECM and perform a test drive to ensure the issue has been resolved.

Cost to Fix P0628 Dodge

The typical repair costs for addressing a P0628 code related to low voltage detected at the fuel lift pump can range from $200 to $500, including parts and labor. However, actual costs may vary depending on the specific diagnosis time and labor rates at auto repair shops, as well as the make and model of the vehicle. It's advisable to consult with a qualified mechanic or dealership for a more accurate estimate based on your vehicle's specific requirements.

What does this mean?

Tech Notes for P0628 Dodge

Usually, the solution to the problem is the fuel lift pump

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P0628 Dodge Code

1. What are the common symptoms of OBDII code P0628 in a Dodge related to low voltage at the fuel lift pump?

Symptoms include difficulty starting the vehicle, engine stalling, reduced engine performance, and potentially a Check Engine light.

2. What can cause the OBDII code P0628 in a Dodge indicating low voltage at the fuel lift pump?

Possible causes include a faulty fuel lift pump, a damaged wiring harness, poor electrical connections, or a malfunctioning fuel pump relay.

3. How can I diagnose the cause of OBDII code P0628 in my Dodge for the low voltage issue?

You can use a multimeter to test the voltage at the fuel lift pump, inspect the wiring for any damage, check the fuel pump relay, and ensure all electrical connections are secure.

4. Is it safe to continue driving my Dodge with OBDII code P0628 indicating low voltage at the fuel lift pump?

It is not recommended to drive the vehicle with this issue, as it can lead to engine stalling and potential safety hazards on the road.

5. Can I reset the Check Engine light after fixing the low voltage issue causing OBDII code P0628 in my Dodge?

Yes, once you have addressed the root cause of the problem and fixed the low voltage issue at the fuel lift pump, you can reset the Check Engine light using an OBDII scanner.

6. Are there any quick repair tips for resolving OBDII code P0628 in a Dodge due to low voltage at the fuel lift pump?

Quick tips include checking and replacing the fuel pump relay, inspecting the wiring for any visible damage, and ensuring all electrical connections are clean and secure.

7. Will a low battery voltage in my Dodge be a potential cause of OBDII code P0628 related to the fuel lift pump issue?

Yes, low battery voltage can contribute to the low voltage detected at the fuel lift pump, so it's essential to ensure your vehicle's battery is in good condition.

8. How much can I expect to pay to repair OBDII code P0628 in my Dodge caused by low voltage at the fuel lift pump?

The cost of repair can vary depending on the exact cause of the issue, but it may involve part replacement, wiring repairs, or relay replacement, ranging from $100 to $500 or more.

9. Can extreme weather conditions affect the occurrence of OBDII code P0628 in a Dodge due to low voltage at the fuel lift pump?

Yes, extreme temperatures can impact the electrical components of the fuel lift pump system, potentially leading to low voltage issues and triggering the OBDII code P0628.

10. Are there any preventative maintenance steps I can take to avoid encountering OBDII code P0628 related to low voltage at the fuel lift pump in my Dodge?

Regularly inspecting the fuel lift pump system, ensuring proper battery maintenance, and addressing any electrical issues promptly can help prevent the occurrence of OBDII code P0628 in your Dodge.

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