AutoCodes – Chevrolet – P0628 2016 Chevrolet Silverado

P0628 2016 Chevrolet Silverado Code - Fuel Pump Speed Output Circuit Low 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: P0628 2016 Chevrolet Silverado indicates Fuel Pump Speed Output Circuit Low 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.

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Code Popularity 436

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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Table of contents Created and updated by William Orellana on Jul 15, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0628 2016 Chevrolet Silverado Description

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. While this voltage is being received, a serial data signal containing the desired fuel pump speed is also received from the ECM. After the voltage and data have been received the fuel pump driver control module actuates the brushless fuel pump by means of a high power three phase signal. The Diagnostic Trouble Code (DTC) will be set when the Fuel Pump Speed Output Circuit is short to ground for greater than 2 s.

OBDII Code P0628 2016 Chevrolet Silverado - Fuel Pump Speed Output Circuit Low Voltage - AutoCodes.com — P0628 2016 Chevrolet Silverado Code - Fuel Pump Speed Output Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P0628 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 P0628 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 P0628 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.

Need more information about the P0628 2016 Chevrolet Silverado code?

Need more information on how to fix the P0628 2016 Chevrolet Silverado code? Get Access to Factory Service Manuals

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P0628 2016 Chevrolet Silverado Code

What does the OBDII code P0628 mean for a 2016 Chevrolet Silverado?

The P0628 code indicates that the Fuel Pump Speed Output Circuit is experiencing low voltage, which may affect the fuel pump's operation.

What are the common symptoms of code P0628 in a 2016 Chevrolet Silverado?

Symptoms may include difficulty starting the engine, poor engine performance, stalling, or the check engine light turning on.

What causes the P0628 code to appear in a 2016 Chevrolet Silverado?

Common causes include a faulty fuel pump, damaged wiring or connectors in the fuel pump circuit, a malfunctioning fuel pump control module, or a weak battery.

Can I drive my 2016 Chevrolet Silverado with a P0628 code?

It is not recommended to drive with this code, as it can cause poor performance or lead to stalling, potentially leaving you stranded.

How do I diagnose the P0628 code in my 2016 Chevrolet Silverado?

Start by checking the battery voltage, inspecting the wiring and connectors to the fuel pump, and testing the fuel pump control module for proper operation.

What tools do I need to troubleshoot the P0628 code?

You will need a multimeter to check voltage, a scan tool to read live data, and possibly a wiring diagram for the fuel pump circuit.

How do I fix the P0628 code on a 2016 Chevrolet Silverado?

Repairs may include replacing a faulty fuel pump, repairing damaged wiring or connectors, replacing the fuel pump control module, or ensuring the battery is fully charged.

How much does it cost to repair the P0628 code on a 2016 Chevrolet Silverado?

Repair costs can vary but typically range from $150 to $800, depending on whether the issue is with the fuel pump, wiring, or control module.

Can a weak battery cause the P0628 code on a 2016 Chevrolet Silverado?

Yes, a weak or failing battery can cause low voltage in the fuel pump circuit, triggering the P0628 code.

Is a P0628 code a common issue for the 2016 Chevrolet Silverado?

While not extremely common, it can occur, especially if there are issues with the fuel pump control system, electrical connections, or battery health.