P0231 GMC 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 GMC 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.
Code P0231 GMC Description
What are the Possible Causes of the DTC P0231 GMC?
- 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 GMC?
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 GMC 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.
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Information for Specific GMC Models
- P0231 2014 GMC Sierra — Fuel Pump Control Circuit Low Voltage
- P0231 2015 GMC Sierra — Fuel Pump Control Circuit Low Voltage
- P0231 2016 GMC Sierra — Fuel Pump Control Circuit Low Voltage
- P0231 2017 GMC Sierra — Fuel Pump Control Circuit Low Voltage
- P0231 2018 GMC Sierra — Fuel Pump Control Circuit Low Voltage
Frequently Asked Questions about P0231 GMC Code
1. What are the common symptoms of OBDII code P0231 in a GMC related to the fuel pump control circuit low voltage?
Symptoms may include difficulty starting the vehicle, hesitation or sputtering during acceleration, and a decrease in overall engine performance.
2. What are the potential causes of OBDII code P0231 indicating a low voltage issue in the fuel pump control circuit of a GMC?
Possible causes include a faulty fuel pump, damaged wiring or connectors in the fuel pump circuit, a blown fuse, or a problem with the fuel pump relay.
3. How can I diagnose the root cause of OBDII code P0231 in my GMC related to the fuel pump control circuit low voltage?
You can start by checking the fuel pump fuse, inspecting the wiring and connectors for any damage, testing the fuel pump relay, and measuring the voltage at the fuel pump to identify the source of the low voltage issue.
4. Is it safe to continue driving my GMC with OBDII code P0231 triggered due to a low voltage problem in the fuel pump control circuit?
It is not recommended to drive the vehicle with this code as it can lead to fuel delivery issues and potential engine damage. It's best to address the issue promptly to avoid further complications.
5. Can a DIY enthusiast repair OBDII code P0231 indicating a low voltage issue in the fuel pump control circuit of a GMC?
Depending on your skill level and access to tools, you may be able to repair this issue yourself by checking and replacing the fuel pump fuse, inspecting and repairing damaged wiring, or replacing the fuel pump relay.
6. How much does it typically cost to repair OBDII code P0231 in a GMC caused by a low voltage issue in the fuel pump control circuit?
The cost of repair can vary depending on the exact cause of the issue, but it may range from $100 to $500, including parts and labor.
7. What are some preventive measures to avoid triggering OBDII code P0231 related to low voltage in the fuel pump control circuit of a GMC?
Regularly inspecting the fuel pump circuit, keeping electrical components clean and well-maintained, and addressing any issues promptly can help prevent this code from being triggered.
8. Can a low battery voltage cause OBDII code P0231 to appear in a GMC indicating a low voltage issue in the fuel pump control circuit?
Yes, a low battery voltage can sometimes cause issues with the fuel pump control circuit, leading to the triggering of OBDII code P0231. It's important to ensure the battery is in good condition.
9. Are there any recalls or technical service bulletins (TSBs) related to OBDII code P0231 in GMC vehicles concerning the fuel pump control circuit low voltage?
It's recommended to check with a GMC dealership or visit the National Highway Traffic Safety Administration (NHTSA) website to see if there are any recalls or TSBs related to this specific issue.
10. Will resetting the OBDII system clear the P0231 code caused by a low voltage problem in the fuel pump control circuit of a GMC?
Resetting the OBDII system may temporarily clear the code, but if the underlying issue is not addressed, the code is likely to reappear. It's essential to diagnose and fix the root cause of the problem to prevent further issues.
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