AutoCodes – GMC – P0231 2017 GMC Sierra

P0231 2017 GMC Sierra Code - Fuel Pump Control Circuit Low Voltage

Quick Answer

The Engine Control Module (ECM) supplies voltage to the fuel pump driver control module when the ECM detects that the ignition is on. Common causes include Faulty Fuel Pump, Fuel Pump harness is open or shorted, Fuel Pump 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: P0231 2017 GMC Sierra indicates Fuel Pump Control Circuit Low Voltage.
Common causes: Common causes include Faulty Fuel Pump, Fuel Pump harness is open or shorted, Fuel Pump 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 538

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jun 02, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0231 2017 GMC Sierra Description

The Engine Control Module (ECM) supplies voltage to the fuel pump driver control module when the ECM detects that the ignition is on. The voltage from the ECM to the fuel pump driver control module remains active for 2 s, unless the engine is in crank or run. While this voltage is being received, the fuel pump driver control module supplies a varying voltage to the fuel tank fuel pump module in order to maintain the desired fuel line pressure. The fuel pump driver control module monitors the fuel pump voltage to determine if the fuel pump is functioning as commanded. The Diagnostic Trouble Code (DTC) will be set if the fuel pump driver control module detects that the fuel pump current is greater than 14.48 A for 1 s.

OBDII Code P0231 2017 GMC Sierra - Fuel Pump Control Circuit Low Voltage - AutoCodes.com — P0231 2017 GMC Sierra Code - Fuel Pump Control Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P0231 2017 GMC Sierra?

Faulty Fuel Pump
Fuel Pump harness is open or shorted
Fuel Pump circuit poor electrical connection
Faulty Fuel Pump Driver Control Module

How to Fix the DTC P0231 2017 GMC Sierra?

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 P0231 2017 GMC Sierra 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 P0231 2017 GMC Sierra code?

Need more information on how to fix the P0231 2017 GMC Sierra 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 P0231 2017 GMC Sierra Code

1. What does the OBDII code P0231 mean on a 2017 GMC Sierra?

P0231 indicates a low voltage condition in the fuel pump control circuit, which may prevent the fuel pump from functioning properly.

2. What are the symptoms of code P0231 on a 2017 GMC Sierra?

Symptoms may include difficulty starting the engine, stalling, reduced fuel efficiency, or complete engine failure to start.

3. What causes the P0231 code on a 2017 GMC Sierra?

Common causes include a faulty fuel pump relay, damaged wiring or connectors in the fuel pump circuit, a weak fuel pump, or a failing PCM (Powertrain Control Module).

4. Can I drive my 2017 GMC Sierra with a P0231 code?

Itâ€™s not recommended to drive with a P0231 code, as it can lead to stalling or prevent the vehicle from starting, leaving you stranded.

5. How do I diagnose the P0231 code on a 2017 GMC Sierra?

Start by inspecting the fuel pump relay, wiring, and connectors for damage or corrosion. Use a multimeter to check for proper voltage in the circuit and test the fuel pump for functionality.

6. How do I fix the P0231 code on a 2017 GMC Sierra?

Repairs may involve replacing a faulty fuel pump relay, repairing or replacing damaged wiring, cleaning corroded connectors, or replacing the fuel pump itself if itâ€™s defective.

7. Can a bad PCM cause the P0231 code on a 2017 GMC Sierra?

Yes, a malfunctioning PCM can cause the P0231 code, but this is less common. The PCM should only be tested or replaced after ruling out other potential causes.

8. How much does it cost to fix the P0231 code on a 2017 GMC Sierra?

Repair costs can vary, ranging from $50-$250 for a fuel pump relay or wiring repair, to $300-$800 if the fuel pump needs replacement. PCM repairs or replacements typically cost more.

9. Will clearing the P0231 code fix the problem on my 2017 GMC Sierra?

Clearing the code may temporarily reset the system, but the underlying issue must be addressed to prevent the code from returning.

10. Can a weak battery trigger the P0231 code on a 2017 GMC Sierra?

Yes, a weak or failing battery can cause low voltage conditions in the fuel pump circuit, potentially triggering the P0231 code. Always test the battery and charging system during diagnosis.