P0629 2016 Chevrolet Silverado Code - Fuel Pump Speed Output Circuit High Voltage
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
- P0629 2016 Chevrolet Silverado indicates Fuel Pump Speed Output Circuit High Voltage.
- 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 P0629 2016 Chevrolet Silverado Description
What are the Possible Causes of the DTC P0629 2016 Chevrolet Silverado?
- 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 P0629 2016 Chevrolet Silverado?
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 P0629 2016 Chevrolet Silverado 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 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.
Discuss the causes and fixes for P0629 2016 Chevrolet Silverado OBDII Code
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