P0628 Code - Fuel Pump 'A' Control Circuit Low
Quick Answer
The Engine Control Module (ECM) monitors the Fuel Pump Control Circuit. Common causes include Faulty fuel pump relay, Faulty fuel pump, Fuel pump harness is open or shorted. 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 indicates Fuel Pump 'A' Control Circuit Low.
- Common causes
- Common causes include Faulty fuel pump relay, Faulty fuel pump, Fuel pump harness is open or shorted.
- 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 P0628 Description
What are the Possible Causes of the DTC P0628?
- Faulty fuel pump relay
- Faulty fuel pump
- Fuel pump harness is open or shorted
- Fuel pump circuit poor electrical connection
- Faulty fuel pump control module (if applicable)
How to Fix the DTC P0628?
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 P0628 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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Information for Specific Makes
- P0628 Audi — Fuel Pump 'A' Control Circuit Low
- P0628 Buick — Fuel Pump Speed Output Circuit Low Voltage
- P0628 Cadillac — Fuel Pump Speed Output Circuit Low Voltage
- P0628 Chevrolet — Fuel Pump Speed Output Circuit Low Voltage
- P0628 Chrysler — Low Voltage Detected At The Fuel Lift Pump
- P0628 Dodge — Low Voltage Detected At The Fuel Lift Pump
- P0628 Ford — Fuel Pump 'A' Control Circuit Low
- P0628 Gmc — Fuel Pump Speed Output Circuit Low Voltage
- P0628 Jeep — Low Voltage Detected At The Fuel Lift Pump
- P0628 Lincoln — Fuel Pump 'A' Control Circuit Low
- P0628 Mazda — Suction Control Valve Circuit Low Input
- P0628 Mercury — Fuel Pump 'A' Control Circuit Low
- P0628 RAM — Low Voltage Detected At The Fuel Lift Pump
- P0628 Suzuki — Fuel Pump Relay Control Circuit Low
- P0628 Volkswagen — Fuel Pump 'A' Control Circuit Low
Frequently Asked Questions about P0628 Code
1. What are the common symptoms of OBDII code P0628 (Fuel Pump 'A' Control Circuit Low)?
- Common symptoms include difficulty starting the vehicle, engine stalling, poor engine performance, and the illumination of the check engine light.
2. What are the possible causes of OBDII code P0628?
- The code P0628 can be caused by issues such as a faulty fuel pump control module, damaged wiring or connectors in the fuel pump circuit, or a defective fuel pump relay.
3. How can I diagnose OBDII code P0628?
- Diagnosing code P0628 involves using a scan tool to retrieve the trouble codes, inspecting the fuel pump control module, checking the wiring and connectors for damage, and testing the fuel pump relay.
4. How can I repair OBDII code P0628?
- Repairing code P0628 may involve replacing the fuel pump control module, repairing or replacing damaged wiring or connectors, or replacing the fuel pump relay if necessary.
5. Can a DIY enthusiast fix OBDII code P0628?
- While some experienced DIY enthusiasts may be able to diagnose and repair code P0628, it is recommended to seek professional help, especially when dealing with electrical components like the fuel pump control circuit.
6. Is it safe to continue driving with OBDII code P0628?
- It is not recommended to continue driving with code P0628, as it can lead to potential fuel pump failure, engine stalling, or other serious issues that may compromise vehicle safety and performance.
7. How much does it typically cost to repair OBDII code P0628?
- The cost of repairing OBDII code P0628 can vary depending on the specific cause of the issue, but it may range from a few hundred dollars to over a thousand dollars, including parts and labor.
8. Can a faulty fuel pump cause OBDII code P0628?
- Yes, a faulty fuel pump control module or a malfunctioning fuel pump can trigger OBDII code P0628 due to disruptions in the fuel pump control circuit.
9. What should I do if I reset the OBDII code P0628 and it comes back?
- If you reset the code P0628 and it comes back, it indicates a persistent issue that needs to be properly diagnosed and repaired to prevent further complications.
10. How long does it take to repair OBDII code P0628?
- The repair time for OBDII code P0628 can vary depending on the complexity of the issue and the availability of parts, but it may take a few hours to a full day at the repair shop.
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