P0231 2014 GMC Sierra Code - Fuel Pump Control Circuit Low Voltage
Quick Answer
The diagnostic trouble code P0231 for a 2014 GMC Sierra indicates a Fuel Pump Control Circuit Low Voltage. Common causes include Faulty fuel pump, Damaged wiring or connectors in the fuel pump control circuit, Malfunctioning fuel pump relay. 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 2014 GMC Sierra indicates Fuel Pump Control Circuit Low Voltage.
- Common causes
- Common causes include Faulty fuel pump, Damaged wiring or connectors in the fuel pump control circuit, Malfunctioning fuel pump relay.
- 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.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
Code P0231 2014 GMC Sierra Description
The diagnostic trouble code P0231 for a 2014 GMC Sierra 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 below 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.
Common Causes of P0231 2014 GMC Sierra
- Faulty fuel pump
- Damaged wiring or connectors in the fuel pump control circuit
- Malfunctioning fuel pump relay
- Issues with the powertrain control module (PCM)
- Electrical issues such as a blown fuse or corroded connections
Symptoms of P0231 2014 GMC Sierra
- Engine misfires or hesitation during acceleration
- Decreased fuel efficiency
- Engine stalling or difficulty starting
- Illumination of the check engine light
- Rough idling or poor engine performance
How to Fix P0231 2014 GMC Sierra
- Begin by conducting a thorough inspection of the fuel pump control circuit, checking for any damaged wiring or connectors. Repair or replace any faulty components.
- Test the fuel pump relay to ensure it is functioning correctly. Replace if necessary.
- Check the fuel pump itself for any signs of damage or malfunction. Replace the fuel pump if it is found to be faulty.
- Clear the diagnostic trouble codes from the PCM memory and perform a test drive to verify that the issue has been resolved.
- If the problem persists, further diagnostic testing may be required to pinpoint the exact cause of the low voltage in the fuel pump control circuit.
Cost to Fix P0231 2014 GMC Sierra
The typical repair costs for addressing a Fuel Pump Control Circuit Low Voltage issue can vary depending on the specific cause of the problem. In general, replacing a faulty fuel pump can cost between $300 to $800, while repairing damaged wiring or connectors may range from $100 to $300. The cost of a new fuel pump relay is typically around $50 to $150. Labor costs at auto repair shops can range from $80 to $150 per hour, so the total repair bill can vary based on the complexity of the repair and the shop's hourly rates. It is advisable to consult with a professional mechanic to get an accurate estimate for the repair.
Need more information about the P0231 2014 GMC Sierra code?
Need more information on how to fix the P0231 2014 GMC Sierra code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P0231 2014 GMC Sierra code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P0231 2014 GMC Sierra Code
1. What does the OBDII code P0231 mean on a 2014 GMC Sierra?
P0231 indicates a low voltage condition in the fuel pump control circuit, which may affect the fuel pump's ability to deliver fuel to the engine.
2. What are the common symptoms of P0231 in a 2014 GMC Sierra?
Symptoms may include difficulty starting the vehicle, engine stalling, poor performance, and in some cases, the engine not starting at all.
3. What causes the P0231 code to appear on a 2014 GMC Sierra?
Common causes include a faulty fuel pump relay, damaged wiring or connections in the fuel pump circuit, a failing fuel pump, or a malfunction in the Powertrain Control Module (PCM).
4. Can a bad fuel pump trigger the P0231 code?
Yes, a failing or malfunctioning fuel pump can trigger the P0231 code if it causes low voltage in the control circuit.
5. How can I diagnose the P0231 code on my 2014 GMC Sierra?
Start by inspecting the fuel pump relay, fuse, and wiring for damage or loose connections. Use a multimeter to test voltage in the circuit and verify fuel pump operation.
6. Is it safe to drive with a P0231 code on a 2014 GMC Sierra?
Driving with this code is not recommended, as it can lead to engine stalling or a no-start condition, which could leave you stranded.
7. How do I fix the P0231 code on my 2014 GMC Sierra?
Repairs may include replacing a faulty fuel pump relay, repairing damaged wiring or connectors, replacing the fuel pump, or reprogramming or replacing the PCM if necessary.
8. Can a blown fuel pump fuse cause the P0231 code?
Yes, a blown fuse in the fuel pump circuit can lead to low voltage and trigger the P0231 code.
9. How much does it cost to fix the P0231 code on a 2014 GMC Sierra?
Repair costs can vary but may range from $50 for a simple relay replacement to $500 or more if the fuel pump or PCM needs to be replaced.
10. Can a weak battery cause the P0231 code on a 2014 GMC Sierra?
While unlikely, a weak battery or charging system issue could contribute to low voltage in the fuel pump circuit, so it’s worth checking the battery and alternator.
Discuss the causes and fixes for P0231 2014 GMC Sierra OBDII Code
Code P0231 2014 GMC Sierra comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.