Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means that the car's computer has detected a problem with the electrical circuit that controls the fuel pump. It's like if a light switch wasn't working, so the light can't turn on.
The P0627 code is triggered when the engine control module (ECM) detects an open circuit or a problem in the control circuit of the fuel pump 'A'.
The fuel pump is responsible for delivering fuel from the tank to the engine. The ECM monitors the fuel pump control circuit to ensure it is functioning correctly. If it detects an open circuit or a fault, it triggers the P0627 code. This can be due to wiring issues, a faulty fuel pump relay, or a malfunctioning fuel pump.
• Engine may not start
• Engine stalling
• No fuel pressure
• Check Engine Light is on
• Faulty fuel pump
• Open or shorted fuel pump circuit
• Bad fuel pump relay
• Faulty ECM
ECM: Engine Control Module
OBD-II: On-Board Diagnostics, Second Generation
• Check for any additional trouble codes.
• Inspect the fuel pump relay and fuse.
• Test the fuel pump circuit for continuity.
• Check the wiring and connections to the fuel pump.
• Replace the fuel pump relay if faulty.
• Repair or replace damaged wiring in the fuel pump circuit.
• Replace the fuel pump if it is not functioning.
• Reprogram or replace the ECM if necessary.
• Multimeter
• OBD-II scanner
• Fuel pressure gauge
$150 - $600
Moderate
• Ford F-150
• Chevrolet Silverado
• Toyota Camry
• Regularly inspect and maintain fuel system components.
• Ensure electrical connections are clean and secure.
• Use high-quality fuel to prevent clogging and wear.
Engine Performance
• Do not ignore the Check Engine Light.
• Have the vehicle inspected by a professional mechanic.
• Avoid driving the vehicle if it stalls frequently.
Warranty coverage may vary; check with the vehicle manufacturer for specific details related to fuel system components.
The P0627 code has been commonly reported in vehicles with high mileage or those with previous fuel system issues.
High – This code can lead to engine stalling or a no-start condition, which can be dangerous.
Driving with a malfunctioning fuel pump can lead to engine failure and poses a safety risk. Address this issue promptly.
• Vehicle should be in a safe, well-ventilated area.
• Ensure the battery is fully charged.
The fuel pump is typically located inside the fuel tank, while the relay and associated wiring are usually found in the engine bay or under the dashboard.
Q: Can I drive with a P0627 code?
A: It's not recommended to drive with this code as it can lead to engine stalling or failure.
Q: How do I reset the P0627 code?
A: After repairs, use an OBD-II scanner to clear the code. If the issue is fixed, it should not return.
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