P2C20 2016 GMC Sierra Code - Fuel Pressure Regulator Performance High Pressure During Cold Start
Quick Answer
The control module controls a series of actuators to ensure optimal engine performance. Common causes include Faulty High Pressure Fuel Pump, High Pressure Fuel Pump harness is open or shorted, High Pressure 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
- P2C20 2016 GMC Sierra indicates Fuel Pressure Regulator Performance High Pressure During Cold Start.
- Common causes
- Common causes include Faulty High Pressure Fuel Pump, High Pressure Fuel Pump harness is open or shorted, High Pressure 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 P2C20 2016 GMC Sierra Description
What are the Possible Causes of the DTC P2C20 2016 GMC Sierra?
- Faulty High Pressure Fuel Pump
- High Pressure Fuel Pump harness is open or shorted
- High Pressure Fuel Pump circuit poor electrical connection
How to Fix the DTC P2C20 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 P2C20 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 P2C20 2016 GMC Sierra code?
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Frequently Asked Questions about P2C20 2016 GMC Sierra Code
1. What does the OBDII code P2C20 mean on a 2016 GMC Sierra?
P2C20 indicates a performance issue with the fuel pressure regulator, where high fuel pressure is detected during a cold start.
2. What are the common symptoms of code P2C20 in a 2016 GMC Sierra?
Symptoms may include rough cold starts, extended cranking, reduced fuel efficiency, and potential check engine light illumination.
3. What causes the P2C20 code to trigger?
Common causes include a faulty fuel pressure regulator, a malfunctioning fuel pressure sensor, a clogged fuel return line, or defective engine control module (ECM) programming.
4. Can a dirty fuel filter cause the P2C20 code?
While not a primary cause, a dirty or restricted fuel filter can contribute to abnormal fuel pressure, potentially leading to the code.
5. How do you diagnose the P2C20 code on a 2016 GMC Sierra?
Diagnosis typically involves scanning for codes, checking fuel pressure readings during a cold start, inspecting the fuel pressure regulator, and testing the fuel pressure sensor.
6. Is it safe to drive with the P2C20 code active?
Driving with this code may not immediately damage the vehicle, but prolonged high fuel pressure could lead to engine or fuel system issues.
7. How is the P2C20 code fixed?
Repairs may involve replacing the fuel pressure regulator, cleaning or replacing the fuel return line, recalibrating the ECM, or replacing the fuel pressure sensor.
8. Can the P2C20 code trigger other engine codes?
Yes, it may be accompanied by other fuel system-related codes, such as P0089 (fuel pressure regulator performance) or P0191 (fuel rail pressure sensor performance).
9. How much does it cost to repair the P2C20 code on a 2016 GMC Sierra?
Repair costs vary but typically range from $150 to $500, depending on whether the fuel pressure regulator or sensor needs replacement.
10. Can extreme cold weather cause the P2C20 code to appear?
Yes, extreme cold can affect fuel pressure regulation and highlight existing issues, potentially triggering the code during a cold start.
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