P0629 2016 Chevrolet Silverado Code - Fuel Pump Speed Output Circuit High Voltage
Quick Answer
The P0629 code for a 2016 Chevrolet Silverado indicates a problem with the fuel pump speed output circuit having high voltage. Common causes include Faulty fuel pump speed sensor, Short or open circuit in the wiring related to the fuel pump speed output, Malfunctioning engine control module (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 2016 Chevrolet Silverado indicates Fuel Pump Speed Output Circuit High Voltage.
- Common causes
- Common causes include Faulty fuel pump speed sensor, Short or open circuit in the wiring related to the fuel pump speed output, Malfunctioning engine control module (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 2016 Chevrolet Silverado Description
The P0629 code for a 2016 Chevrolet Silverado indicates a problem with the fuel pump speed output circuit having high voltage. The fuel pump speed output circuit is responsible for regulating the speed of the fuel pump, which in turn controls the flow of fuel to the engine. When the voltage on this circuit is too high, it can lead to various issues with the fuel pump's operation, affecting the vehicle's performance.
Common Causes of P0629 2016 Chevrolet Silverado
- Faulty fuel pump speed sensor
- Short or open circuit in the wiring related to the fuel pump speed output
- Malfunctioning engine control module (ECM)
- Corrosion or damage to electrical connectors related to the fuel pump
Symptoms of P0629 2016 Chevrolet Silverado
- Check engine light illuminated on the dashboard
- Poor engine performance, including hesitation or stalling
- Reduced fuel efficiency
- Difficulty starting the vehicle
- Engine misfires or rough idling
How to Fix P0629 2016 Chevrolet Silverado
- Diagnose the issue using a scan tool to read the specific trouble code and perform further testing to identify the root cause of the high voltage in the fuel pump speed output circuit.
- Inspect the wiring and connectors related to the fuel pump speed output for any signs of damage or corrosion, repairing or replacing as needed.
- Test the fuel pump speed sensor for proper operation, replacing it if found to be faulty.
- Check the engine control module for any issues that could be causing the high voltage in the circuit, repairing or replacing as necessary.
- Clear the trouble code from the vehicle's computer after the repair is completed and test drive the vehicle to ensure the issue has been resolved.
Cost to Fix P0629 2016 Chevrolet Silverado
The cost of repairing a P0629 code on a 2016 Chevrolet Silverado can vary depending on the specific cause of the issue and the labor rates in your area. On average, the cost of parts for this repair could range from $100 to $300, with labor costs adding an additional $100 to $200. Overall, you can expect to pay between $200 and $500 for this repair at an auto repair shop. Keep in mind that rates can vary based on location, vehicle make and model, and the complexity of the repair. It's recommended to obtain quotes from multiple shops to ensure you're getting a fair price for the repair.
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Frequently Asked Questions about P0629 2016 Chevrolet Silverado Code
What does the OBDII code P0629 mean for a 2016 Chevrolet Silverado?
P0629 indicates that the fuel pump speed output circuit is experiencing high voltage, which could impact fuel delivery performance.
What are the common symptoms of code P0629 on a 2016 Chevrolet Silverado?
Symptoms may include difficulty starting, engine stalling, reduced fuel efficiency, or erratic engine performance.
What causes the P0629 code to be triggered in a 2016 Chevrolet Silverado?
Common causes include a faulty fuel pump relay, damaged wiring or connectors in the fuel pump circuit, or a malfunctioning powertrain control module (PCM).
Can I drive my 2016 Chevrolet Silverado with the P0629 code present?
Driving with this code is not recommended as it may lead to poor engine performance or further damage to the fuel system.
How do I diagnose the P0629 code in a 2016 Chevrolet Silverado?
Start by visually inspecting the fuel pump relay, wiring, and connectors for damage. Use a multimeter to check for high voltage in the circuit and verify PCM functionality.
How can I fix the P0629 code on my 2016 Chevrolet Silverado?
Repairs may include replacing a faulty fuel pump relay, repairing or replacing damaged wiring, or reprogramming or replacing the PCM if necessary.
Is the P0629 code related to the fuel pump itself?
Not directly. The code pertains to the fuel pump circuit voltage, but a failing fuel pump relay or electrical issues can indirectly affect the pump’s operation.
What tools do I need to troubleshoot the P0629 code?
You’ll need a scan tool to read the code, a multimeter to check voltage and continuity, and possibly wiring diagrams specific to the fuel pump circuit.
How much does it cost to repair the P0629 code on a 2016 Chevrolet Silverado?
Repair costs vary but may range from $50 to $300 depending on whether you need to replace a relay or repair wiring. PCM replacement can cost significantly more.
Can a bad PCM cause the P0629 code in a 2016 Chevrolet Silverado?
Yes, a malfunctioning PCM can send incorrect signals to the fuel pump circuit, resulting in high voltage and triggering the P0629 code.
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