P0627 Buick Code - Fuel Pump Speed Output Circuit
Quick Answer
The Engine Control Module (ECM) supplies voltage to the fuel pump driver control module for 30 s when the ignition is on and continuously when the engine is running. Common causes include Faulty Fuel Pump Driver Control Module, Fuel Pump Driver Control Module harness is open or shorted, Fuel Pump Driver Control Module circuit poor electrical connection. 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
- P0627 Buick indicates Fuel Pump Speed Output Circuit.
- Common causes
- Common causes include Faulty Fuel Pump Driver Control Module, Fuel Pump Driver Control Module harness is open or shorted, Fuel Pump Driver Control Module circuit poor electrical connection.
- 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 P0627 Buick Description
What are the Possible Causes of the DTC P0627 Buick?
- Faulty Fuel Pump Driver Control Module
- Fuel Pump Driver Control Module harness is open or shorted
- Fuel Pump Driver Control Module circuit poor electrical connection
- Faulty Engine Control Module (ECM)
How to Fix the DTC P0627 Buick?
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.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0627 Buick 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 P0627 Buick Code
1. What are the common symptoms of OBDII code P0627 in a Buick related to the Fuel Pump Speed Output Circuit?
The common symptoms include issues with the vehicle stalling, difficulty starting, decreased fuel efficiency, and the check engine light illuminating.
2. What are the possible causes of OBDII code P0627 in a Buick?
Possible causes include a faulty fuel pump, damaged wiring or connectors in the fuel pump circuit, a failed fuel pump control module, or a problem with the powertrain control module (PCM).
3. How can I diagnose the issue causing OBDII code P0627 in my Buick?
Diagnosis typically involves using a scan tool to read the trouble codes, inspecting the wiring and connectors in the fuel pump circuit, testing the fuel pump control module, and checking the fuel pump's operation.
4. Can I continue driving my Buick with OBDII code P0627 related to the Fuel Pump Speed Output Circuit?
It is not recommended to continue driving the vehicle with this code since it can lead to fuel delivery issues and potential stalling, which may compromise safety.
5. How can I repair OBDII code P0627 in my Buick?
Repairing the issue involves addressing the root cause, which could include replacing the fuel pump, repairing damaged wiring or connectors, replacing the fuel pump control module, or reprogramming the PCM.
6. Is it possible to reset OBDII code P0627 in a Buick without fixing the underlying issue?
While clearing the trouble code with a scan tool may temporarily turn off the check engine light, the code is likely to return until the root cause is fixed.
7. How much does it typically cost to repair OBDII code P0627 in a Buick?
The cost of repair can vary depending on the exact cause of the issue, but it may range from a few hundred to over a thousand dollars, including parts and labor.
8. Are there any preventive maintenance steps to avoid OBDII code P0627 in my Buick?
Regularly inspecting the fuel pump system, keeping up with scheduled maintenance, and promptly addressing any fuel delivery issues can help prevent OBDII code P0627 from occurring.
9. Can a DIY enthusiast fix OBDII code P0627 in a Buick?
While some aspects of diagnosing and repairing this code may be within reach for experienced DIYers, working with fuel systems and electrical components can be complex and may require specialized tools and knowledge.
10. How long does it take to repair OBDII code P0627 related to the Fuel Pump Speed Output Circuit in a Buick?
The repair time can vary based on the cause of the issue and the extent of the repair needed, but it may take anywhere from a few hours to a full day at a repair shop.
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