P0627 2016 GMC Sierra Code - Fuel Pump Speed Output Circuit
Quick Answer
The P0627 diagnostic trouble code (DTC) in a 2016 GMC Sierra relates to the fuel pump speed output circuit. Common causes include Faulty fuel pump speed sensor, Damaged wiring harness, Defective FPCM. 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
- P0627 2016 GMC Sierra indicates Fuel Pump Speed Output Circuit.
- Common causes
- Common causes include Faulty fuel pump speed sensor, Damaged wiring harness, Defective FPCM.
- 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 P0627 2016 GMC Sierra Description
The P0627 diagnostic trouble code (DTC) in a 2016 GMC Sierra relates to the fuel pump speed output circuit. This code indicates that there is an issue with the fuel pump control module (FPCM) not receiving the correct signal from the fuel pump speed sensor. The fuel pump speed sensor is responsible for monitoring the speed of the fuel pump and sending this information to the FPCM. The FPCM uses this data to regulate the fuel pump's speed and ensure the correct fuel pressure is maintained for optimal engine performance.
Common Causes of P0627 2016 GMC Sierra
- Faulty fuel pump speed sensor
- Damaged wiring harness
- Defective FPCM
- Corrosion or poor connections in the circuit
- Electrical issues such as a blown fuse
Symptoms of P0627 2016 GMC Sierra
- Engine misfires
- Hesitation during acceleration
- Stalling
- No-start condition
- Decreased fuel efficiency
How to Fix P0627 2016 GMC Sierra
- Diagnose the P0627 code using a scan tool to pinpoint the exact cause of the issue.
- Inspect the fuel pump speed sensor and wiring harness for any signs of damage or corrosion.
- Test the FPCM to determine if it is functioning correctly.
- Replace the faulty fuel pump speed sensor, wiring harness, or FPCM as needed.
- Clear the DTC and test drive the vehicle to ensure the issue has been resolved.
Cost to Fix P0627 2016 GMC Sierra
The typical repair costs for addressing a P0627 code in a 2016 GMC Sierra can vary depending on the specific cause of the issue. In general, replacing a faulty fuel pump speed sensor or wiring harness may cost between $150 to $300, while replacing the FPCM can range from $300 to $600. Labor costs can add an additional $80 to $150 per hour, and the total repair bill may amount to $400 to $1000 or more. It's advisable to consult with a qualified mechanic or auto repair shop for a more accurate estimate based on the specific circumstances of the vehicle. Keep in mind that labor rates can vary based on location, vehicle make and model, and other factors.
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Frequently Asked Questions about P0627 2016 GMC Sierra Code
1. What does the OBDII code P0627 mean on a 2016 GMC Sierra?
P0627 indicates an issue with the fuel pump speed output circuit, which suggests that the Engine Control Module (ECM) has detected a malfunction in the fuel pump control system.
2. What are the common symptoms of code P0627 in a 2016 GMC Sierra?
Symptoms may include difficulty starting, stalling, reduced engine performance, poor fuel economy, or the Check Engine Light being illuminated.
3. What causes the P0627 code to appear in a 2016 GMC Sierra?
Common causes include a faulty fuel pump, damaged wiring or connectors in the fuel pump circuit, a failed ECM, or a malfunctioning fuel pump relay.
4. Can I drive my 2016 GMC Sierra with a P0627 code?
Driving with a P0627 code is not recommended, as it may lead to stalling or further damage to the fuel pump system, potentially leaving you stranded.
5. How do I fix the P0627 code on a 2016 GMC Sierra?
Repairs may include inspecting and repairing wiring or connectors in the fuel pump circuit, replacing a faulty fuel pump, or replacing a defective ECM if necessary.
6. How can I diagnose the P0627 code on my 2016 GMC Sierra?
Start by checking the wiring and connectors for damage or corrosion, testing the fuel pump relay, and using a multimeter to measure voltage at the fuel pump. Verify the ECM functionality if other components check out.
7. What tools are needed to diagnose the P0627 code in a 2016 GMC Sierra?
You’ll need an OBDII scanner, a multimeter, and possibly a wiring diagram for the fuel pump circuit to properly diagnose the issue.
8. How much does it cost to repair a P0627 code on a 2016 GMC Sierra?
Repair costs depend on the root cause but may range from $50 for a simple wiring repair to $1,000 or more if the fuel pump or ECM needs replacement.
9. Can a bad fuel pump cause the P0627 code in a 2016 GMC Sierra?
Yes, a failing or faulty fuel pump is a common cause of the P0627 code as it directly impacts the fuel pump speed output circuit.
10. Will clearing the P0627 code fix the problem on my 2016 GMC Sierra?
Clearing the code may temporarily turn off the Check Engine Light, but the underlying issue must be resolved to prevent the code from returning.
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