P0629 2017 Chevrolet Silverado Code - Fuel Pump Speed Output Circuit High Voltage
Quick Answer
The P0629 diagnostic trouble code (DTC) for a 2017 Chevrolet Silverado indicates a Fuel Pump Speed Output Circuit High Voltage. Common causes include Faulty fuel pump speed sensor, Damaged wiring or connectors in the fuel pump speed output circuit, Malfunctioning ECM. 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
- P0629 2017 Chevrolet Silverado indicates Fuel Pump Speed Output Circuit High Voltage.
- Common causes
- Common causes include Faulty fuel pump speed sensor, Damaged wiring or connectors in the fuel pump speed output circuit, Malfunctioning ECM.
- 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.
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Code P0629 2017 Chevrolet Silverado Description
The P0629 diagnostic trouble code (DTC) for a 2017 Chevrolet Silverado indicates a Fuel Pump Speed Output Circuit High Voltage. This code is triggered when the Engine Control Module (ECM) detects that the voltage signal from the fuel pump speed output circuit is higher than the specified range. The fuel pump speed output circuit is responsible for controlling the speed of the fuel pump, which ensures the proper fuel pressure is maintained for the engine to run smoothly.
Common Causes of P0629 2017 Chevrolet Silverado
- Faulty fuel pump speed sensor
- Damaged wiring or connectors in the fuel pump speed output circuit
- Malfunctioning ECM
- Defective fuel pump
- Electrical issues such as a short circuit or corrosion
Symptoms of P0629 2017 Chevrolet Silverado
- Engine misfires or runs rough
- Difficulty starting the vehicle
- Reduced fuel efficiency
- Stalling or hesitation during acceleration
- Illumination of the Check Engine Light
How to Fix P0629 2017 Chevrolet Silverado
- Begin by using a scan tool to verify the P0629 code and check for any other related codes.
- Inspect the wiring and connectors in the fuel pump speed output circuit for any damage or corrosion. Repair or replace as needed.
- Test the fuel pump speed sensor to ensure it is functioning correctly. Replace if faulty.
- If the sensor and wiring are in good condition, test the ECM to determine if it is sending the correct signals to the fuel pump. Replace the ECM if necessary.
- Finally, test the fuel pump itself to ensure it is operating at the correct speed. Replace the fuel pump if it is found to be defective.
Cost to Fix P0629 2017 Chevrolet Silverado
The typical repair costs for addressing a P0629 code on a 2017 Chevrolet Silverado can range from $200 to $600, depending on the specific cause of the issue and the cost of parts and labor in your area. This estimate includes the cost of diagnostic testing, replacement parts, and labor. Keep in mind that labor rates at auto repair shops can vary, with hourly rates typically ranging between $80 and $150. It is advisable to check with local repair shops for a more accurate estimate based on your location and vehicle specifics.
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