P0628 2017 GMC Sierra Code - Fuel Pump Speed Output Circuit Low Voltage
Quick Answer
The P0628 diagnostic trouble code (DTC) for a 2017 GMC Sierra indicates a problem with the fuel pump speed output circuit registering low voltage. Common causes include Faulty fuel pump control module, Damaged wiring or connectors in the fuel pump circuit, Low battery voltage affecting the fuel pump operation. 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 2017 GMC Sierra indicates Fuel Pump Speed Output Circuit Low Voltage.
- Common causes
- Common causes include Faulty fuel pump control module, Damaged wiring or connectors in the fuel pump circuit, Low battery voltage affecting the fuel pump operation.
- 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.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
Code P0628 2017 GMC Sierra Description
The P0628 diagnostic trouble code (DTC) for a 2017 GMC Sierra indicates a problem with the fuel pump speed output circuit registering low voltage. This code is typically indicative of an issue with the fuel pump control module or the wiring associated with it. The fuel pump speed output circuit is responsible for regulating the fuel pump's speed to ensure proper fuel delivery to the engine. When the voltage in this circuit drops below the acceptable range, it can lead to performance issues and potential long-term damage if not addressed promptly.
Common Causes of P0628 2017 GMC Sierra
- Faulty fuel pump control module
- Damaged wiring or connectors in the fuel pump circuit
- Low battery voltage affecting the fuel pump operation
- Issues with the fuel pump itself
- Corrosion or moisture in the fuel pump speed output circuit
Symptoms of P0628 2017 GMC Sierra
- Engine misfires or hesitation during acceleration
- Difficulty starting the vehicle
- Reduced fuel efficiency
- Illumination of the check engine light
- Vehicle stalling or shutting off unexpectedly
How to Fix P0628 2017 GMC Sierra
- Begin by conducting a thorough inspection of the fuel pump control module, wiring, and connectors for any visible damage or corrosion.
- Test the fuel pump speed output circuit using a multimeter to check for proper voltage levels.
- Replace the fuel pump control module if it is determined to be faulty.
- Repair or replace any damaged wiring or connectors in the fuel pump circuit.
- Clear the DTC and perform a test drive to ensure the issue has been resolved.
Cost to Fix P0628 2017 GMC Sierra
The cost of repairing a P0628 code on a 2017 GMC Sierra can vary depending on the extent of the damage and the specific repairs needed. Generally, the cost can range from $200 to $500 for parts and labor. It's important to note that diagnosis time and labor rates at auto repair shops can impact the overall cost, so it's advisable to consult with a professional for an accurate estimate.
Need more information about the P0628 2017 GMC Sierra code?
Need more information on how to fix the P0628 2017 GMC Sierra code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P0628 2017 GMC Sierra code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P0628 2017 GMC Sierra Code
1. What does the OBDII code P0628 mean for a 2017 GMC Sierra?
P0628 indicates that the fuel pump control module has detected low voltage in the fuel pump speed output circuit.
2. What are the symptoms of code P0628 in a 2017 GMC Sierra?
Symptoms can include difficulty starting, engine stalling, reduced fuel efficiency, and potentially a check engine light.
3. What causes code P0628 in a 2017 GMC Sierra?
Common causes include a faulty fuel pump, damaged wiring or connectors, a defective fuel pump relay, or issues with the fuel pump control module.
4. Can code P0628 cause engine damage if ignored?
While it may not directly cause engine damage, prolonged fuel delivery issues can lead to engine performance problems and potentially damage components over time.
5. How is code P0628 diagnosed in a 2017 GMC Sierra?
A mechanic will check the fuel pump circuit for low voltage, inspect wiring and connectors, test the fuel pump relay, and evaluate the fuel pump control module for proper operation.
6. Can I drive my 2017 GMC Sierra with code P0628?
It’s not recommended, as the vehicle may experience stalling or fail to start, potentially leaving you stranded.
7. How do you fix code P0628 in a 2017 GMC Sierra?
Repairs may involve replacing the fuel pump, repairing damaged wiring or connectors, replacing the fuel pump relay, or replacing the fuel pump control module.
8. What tools are needed to fix code P0628?
Basic tools include a multimeter to test voltage, wiring repair tools, and potentially a scan tool to clear the code after repairs are completed.
9. How much does it cost to repair code P0628 in a 2017 GMC Sierra?
Repair costs vary depending on the specific issue, ranging from $150 for a relay replacement to over $1,000 for a fuel pump replacement.
10. Can code P0628 be prevented in a 2017 GMC Sierra?
Regular maintenance, including inspecting wiring and connectors and addressing fuel system issues early, can help prevent this code from occurring.
Discuss the causes and fixes for P0628 2017 GMC Sierra OBDII Code
Code P0628 2017 GMC Sierra comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.