P0231 2016 GMC Sierra 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 GMC Sierra 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 2016 GMC Sierra Description
What are the Possible Causes of the DTC P0231 2016 GMC Sierra?
- 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 GMC Sierra?
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 GMC Sierra 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 GMC Sierra code?
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Frequently Asked Questions about P0231 2016 GMC Sierra Code
1. What does the OBDII code P0231 mean on a 2016 GMC Sierra?
P0231 indicates a low voltage condition in the fuel pump control circuit, which can prevent the fuel pump from functioning properly.
2. What are the common symptoms of P0231 in a 2016 GMC Sierra?
Symptoms include difficulty starting, engine stalling, reduced engine performance, or the engine not starting at all.
3. What causes the P0231 code to appear in a 2016 GMC Sierra?
Common causes include a faulty fuel pump relay, damaged wiring or connectors in the fuel pump circuit, a failing fuel pump, or a malfunctioning PCM (Powertrain Control Module).
4. How can I diagnose the P0231 code on my 2016 GMC Sierra?
Start by checking the fuel pump relay, inspecting the wiring and connectors for damage, and testing the voltage at the fuel pump. A scan tool can also help monitor live data for further troubleshooting.
5. Can a bad fuel pump trigger the P0231 code on a 2016 GMC Sierra?
Yes, a failing or faulty fuel pump can cause low voltage in the circuit, leading to the P0231 code.
6. How do I fix the P0231 code on my 2016 GMC Sierra?
Repairs may include replacing the fuel pump relay, repairing damaged wiring, cleaning corroded connectors, or replacing the fuel pump if it is faulty.
7. Is it safe to drive a 2016 GMC Sierra with the P0231 code?
Driving with this code is not recommended as it can lead to engine stalling or prevent the vehicle from starting, potentially leaving you stranded.
8. Can a blown fuse cause the P0231 code on a 2016 GMC Sierra?
Yes, a blown fuse in the fuel pump circuit can cause low voltage and trigger the P0231 code.
9. Does the P0231 code always mean the fuel pump is bad on a 2016 GMC Sierra?
No, the code can also be caused by issues with the wiring, connectors, fuel pump relay, or even the PCM.
10. Will clearing the P0231 code fix the problem on a 2016 GMC Sierra?
Clearing the code will reset the check engine light, but the underlying issue must be addressed to prevent the code from returning.
Discuss the causes and fixes for P0231 2016 GMC Sierra OBDII Code
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