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P0231 2016 Chevrolet Silverado Code - Fuel Pump Control Circuit Low Voltage

Quick Answer

The P0231 diagnostic trouble code (DTC) for a 2016 Chevrolet Silverado indicates a Fuel Pump Control Circuit Low Voltage. Common causes include Faulty fuel pump relay, Damaged fuel pump control module, Wiring issues or corrosion in the fuel pump control circuit. 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 relay, Damaged fuel pump control module, Wiring issues or corrosion in the fuel pump control circuit.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 16, 2024
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Code P0231 2016 Chevrolet Silverado Description

The P0231 diagnostic trouble code (DTC) for a 2016 Chevrolet Silverado indicates a Fuel Pump Control Circuit Low Voltage. This code is triggered when the powertrain control module (PCM) detects that the voltage in the fuel pump control circuit is lower than the specified range. The fuel pump control circuit is responsible for regulating the fuel pump's operation, ensuring that the correct amount of fuel is delivered to the engine for optimal performance.

OBDII Code P0231 2016 Chevrolet Silverado - Fuel Pump Control Circuit Low Voltage
P0231 2016 Chevrolet Silverado Code - Fuel Pump Control Circuit Low Voltage

Common Causes of P0231 2016 Chevrolet Silverado

  1. Faulty fuel pump relay.
  2. Damaged fuel pump control module.
  3. Wiring issues or corrosion in the fuel pump control circuit.
  4. Malfunctioning PCM.
  5. Low voltage in the vehicle's electrical system.

Symptoms of P0231 2016 Chevrolet Silverado

  1. Engine misfires or hesitation during acceleration.
  2. Difficulty starting the vehicle.
  3. Reduced fuel efficiency.
  4. Engine stalling while driving.
  5. Illumination of the check engine light.

How to Fix P0231 2016 Chevrolet Silverado

  1. Diagnose the specific cause of the low voltage in the fuel pump control circuit using a diagnostic scanner.
  2. Inspect the fuel pump relay and control module for any signs of damage or malfunction.
  3. Check the wiring in the fuel pump control circuit for any corrosion or loose connections.
  4. Test the PCM to ensure it is functioning correctly.
  5. Replace any faulty components identified during the diagnostic process, such as the fuel pump relay, control module, or wiring.

Cost to Fix P0231 2016 Chevrolet Silverado

The typical repair costs for addressing a P0231 code on a 2016 Chevrolet Silverado can range from $200 to $500, including parts and labor. However, it is important to note that the specific diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. Most auto repair shops commonly charge between $80 and $150 per hour; rates in metropolitan areas or at dealerships may be higher, while independent shops often charge less. It is advisable to check local rates for a more precise estimate.

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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 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.

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