AutoCodes – Chevrolet – P0231 2016 Chevrolet Silverado

P0231 2016 Chevrolet Silverado 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 2016 Chevrolet Silverado 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 1,377

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 Jun 02, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0231 2016 Chevrolet Silverado 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 2016 Chevrolet Silverado - Fuel Pump Control Circuit Low Voltage - AutoCodes.com — P0231 2016 Chevrolet Silverado Code - Fuel Pump Control Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P0231 2016 Chevrolet Silverado?

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 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 P0231 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 P0231 2016 Chevrolet Silverado code?

Need more information on how to fix the P0231 2016 Chevrolet Silverado code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0231 2016 Chevrolet Silverado code diagnosed by a professional: Find a repair shop in your area

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 2016 Chevrolet Silverado Code

1. What are the common symptoms of OBDII code P0231 in a 2016 Chevrolet Silverado?

The common symptoms of code P0231 include difficulty starting the vehicle, engine stalling, reduced engine power, and the Check Engine light illuminating on the dashboard.

2. What does the OBDII code P0231 Fuel Pump Control Circuit Low Voltage mean for a 2016 Chevrolet Silverado?

Code P0231 indicates that the Engine Control Module (ECM) has detected a low voltage condition in the fuel pump control circuit.

3. What are the possible causes of OBDII code P0231 in a 2016 Chevrolet Silverado?

Possible causes of code P0231 include a faulty fuel pump relay, damaged wiring or connectors in the fuel pump circuit, a defective fuel pump, or a problem with the ECM.

4. How can I diagnose the OBDII code P0231 in my 2016 Chevrolet Silverado?

Diagnosing code P0231 typically involves checking the fuel pump relay, inspecting the wiring and connectors for damage, testing the fuel pump for proper operation, and verifying the ECM functionality.

5. Can I still drive my 2016 Chevrolet Silverado with OBDII code P0231 present?

It is not recommended to drive your vehicle with code P0231 as it can lead to engine stalling or other potentially dangerous situations. It is best to address the issue promptly.

6. How can I repair OBDII code P0231 in my 2016 Chevrolet Silverado?

Repairing code P0231 may involve replacing the fuel pump relay, repairing or replacing damaged wiring or connectors, replacing the fuel pump if necessary, or reprogramming the ECM.

7. Is it safe to reset the Check Engine light after fixing OBDII code P0231 in my 2016 Chevrolet Silverado?

Yes, once the issue causing code P0231 has been resolved, you can safely reset the Check Engine light using an OBDII scanner or by disconnecting the battery for a few minutes.

8. Can a DIY enthusiast fix OBDII code P0231 in a 2016 Chevrolet Silverado?

While some repairs related to code P0231 can be done by a DIY enthusiast, diagnosing and repairing issues with the fuel pump circuit may require specialized tools and knowledge, so it's best to consult a professional mechanic.

9. Will OBDII code P0231 affect the fuel efficiency of my 2016 Chevrolet Silverado?

Yes, code P0231 can potentially affect the fuel efficiency of your vehicle due to the improper functioning of the fuel pump control circuit, which can lead to fuel delivery issues.

10. How much does it cost to fix OBDII code P0231 in a 2016 Chevrolet Silverado?

The cost to fix code P0231 can vary depending on the root cause of the issue and whether repairs can be done at home or at a repair shop. It's advisable to get a diagnosis and estimate from a qualified mechanic.