P0231 2017 GMC Sierra Code - Fuel Pump Control Circuit Low Voltage
Quick Answer
The P0231 diagnostic trouble code (DTC) for a 2017 GMC Sierra indicates a Fuel Pump Control Circuit Low Voltage. Common causes include Faulty fuel pump, Damaged wiring or connectors in the fuel pump 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 2017 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 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.
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Code P0231 2017 GMC Sierra Description
The P0231 diagnostic trouble code (DTC) for a 2017 GMC Sierra indicates a Fuel Pump Control Circuit Low Voltage. This means that the powertrain control module (PCM) has detected a lower than expected voltage from the fuel pump control circuit. The fuel pump control circuit is responsible for regulating the fuel pump's operation, ensuring the correct amount of fuel is delivered to the engine for combustion. When the voltage in this circuit is too low, it can lead to issues with fuel delivery, potentially causing poor engine performance, stalling, or even a no-start condition.
Common Causes of P0231 2017 GMC Sierra
- Faulty fuel pump
- Damaged wiring or connectors in the fuel pump circuit
- Malfunctioning fuel pump relay
- Issues with the PCM
- Low fuel level in the tank causing the pump to work harder
Symptoms of P0231 2017 GMC Sierra
- Engine misfires or hesitation during acceleration
- Reduced fuel efficiency
- Engine stalling or difficulty starting
- Illumination of the check engine light
- Rough idling or poor engine performance
How to Fix P0231 2017 GMC Sierra
- Begin by checking the fuel pump fuse to ensure it is not blown.
- Inspect the wiring and connectors in the fuel pump circuit for any damage or corrosion.
- Test the fuel pump relay to determine if it is functioning correctly.
- If the above steps do not resolve the issue, consider replacing the fuel pump itself.
- Clear the DTC and test drive the vehicle to ensure the issue has been resolved.
Cost to Fix P0231 2017 GMC Sierra
The typical repair costs for addressing a P0231 code on a 2017 GMC Sierra can vary depending on the specific cause of the issue. In general, replacing a faulty fuel pump can range from $300 to $800, while addressing wiring or relay issues may cost between $100 and $300. Labor costs can add an additional $100 to $300, depending on the shop's hourly rates and the complexity of the repair. It's advisable to consult with a qualified mechanic to get an accurate estimate based on the specific diagnosis and repair needed for your vehicle.
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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?
It’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 it’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.
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