AutoCodes – GMC – P2C1E 2016 GMC Sierra

P2C1E 2016 GMC Sierra Code - Fuel Pressure Regulator Performance 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: P2C1E 2016 GMC Sierra indicates Fuel Pressure Regulator Performance 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.

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Code Popularity 147

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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Table of contents Created and updated by William Orellana on May 16, 2022

Description
Possible Causes
How To Fix
Tech Notes ▶
Cost to Diagnose
FAQs
Comments
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Code P2C1E 2016 GMC Sierra Description

The control module controls a series of actuators to ensure optimal engine performance. The control module does this by reading values from a variety of sensors, interprets the data, and adjusts the engine actuators accordingly. The fuel pressure regulator is a part of the high pressure fuel pump. The fuel pressure regulator is the solenoid valve that controls the pressure in the fuel rail. The Diagnostic Trouble Code (DTC) will be set when the High Pressure Fuel Pump Control is greater than the maximum threshold for greater than 10 s.

OBDII Code P2C1E 2016 GMC Sierra - Fuel Pressure Regulator Performance During Cold Start - AutoCodes.com — P2C1E 2016 GMC Sierra Code - Fuel Pressure Regulator Performance During Cold Start

What does this mean?

What are the Possible Causes of the DTC P2C1E 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 P2C1E 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 does this mean?

Code Tech Notes

User Submitted Video

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P2C1E 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.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P2C1E 2016 GMC Sierra Code

1. What does the OBDII code P2C1E mean on a 2016 GMC Sierra?

The P2C1E code indicates an issue with the fuel pressure regulator's performance during a cold start, meaning it is not maintaining the correct pressure levels when the engine is cold.

2. What are the common symptoms of the P2C1E code?

Symptoms may include rough cold starts, extended cranking time, reduced engine performance, poor fuel economy, or the check engine light being illuminated.

3. What causes the P2C1E code to appear?

Potential causes include a faulty fuel pressure regulator, clogged fuel injectors, a failing high-pressure fuel pump, low fuel pressure, or wiring and connection issues in the fuel system.

4. Can I drive my 2016 GMC Sierra with the P2C1E code?

While it may be possible to drive with this code, it is not recommended, as it can lead to further engine performance issues or damage if the fuel pressure system is not functioning correctly.

5. How is the P2C1E code diagnosed?

A mechanic will use a scan tool to verify the code, inspect the fuel pressure regulator, test the fuel system pressure, and check for any wiring or connector faults.

6. How do I fix the P2C1E code on my GMC Sierra?

Repairs may involve replacing the fuel pressure regulator, cleaning or replacing clogged fuel injectors, repairing damaged wiring, or replacing the high-pressure fuel pump if necessary.

7. What tools are needed to diagnose a P2C1E code?

A professional-grade OBDII scanner, a fuel pressure gauge, and basic tools to inspect and repair fuel system components are typically required.

8. Can a dirty fuel filter cause the P2C1E code?

Yes, a dirty or clogged fuel filter can restrict fuel flow, leading to improper fuel pressure during a cold start and triggering this code.

9. How much does it cost to repair the P2C1E code?

The cost will vary depending on the required repairs. Replacing a fuel pressure regulator can range from $150 to $400, while more extensive repairs like a fuel pump replacement could cost upwards of $1,000.

10. Can a software update fix the P2C1E code?

In some cases, a software update for the engine control module (ECM) may resolve the issue, but it depends on the specific circumstances of the code and your vehicle's condition.