AutoCodes – GMC – P228B GMC

P228B GMC Code - Fuel Pressure Regulator 2 Control Forced Engine Shutdown

Quick Answer

The Engine Control Module (ECM) controls the fuel rail pressure by controlling fuel pressure regulator 1 and fuel pressure regulator 2 simultaneously to achieve the desired fuel rail pressure. Common causes include Faulty Fuel Pressure Regulator 2, Fuel Pressure Regulator 2 harness is open or shorted, Fuel Pressure Regulator 2 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
P228B GMC indicates Fuel Pressure Regulator 2 Control Forced Engine Shutdown.
Common causes
Common causes include Faulty Fuel Pressure Regulator 2, Fuel Pressure Regulator 2 harness is open or shorted, Fuel Pressure Regulator 2 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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 670
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jul 27, 2021
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Code P228B GMC Description

The Engine Control Module (ECM) controls the fuel rail pressure by controlling fuel pressure regulator 1 and fuel pressure regulator 2 simultaneously to achieve the desired fuel rail pressure. The ECM compares the desired fuel pressure that is calculated, and the actual fuel pressure reading from the fuel pressure sensor and monitors these two values to detect faults in the fuel system. The Diagnostic Trouble Code (DTC) will be set when the ECM detects that the fuel pressure regulator that is commanding the pressure is lower than the desired value for greater than 10 s.
OBDII Code P228B GMC - Fuel Pressure Regulator 2 Control Forced Engine Shutdown - AutoCodes.com
P228B GMC Code - Fuel Pressure Regulator 2 Control Forced Engine Shutdown

What are the Possible Causes of the DTC P228B GMC?

  • Faulty Fuel Pressure Regulator 2
  • Fuel Pressure Regulator 2 harness is open or shorted
  • Fuel Pressure Regulator 2 circuit poor electrical connection
  • Faulty Fuel Injector

How to Fix the DTC P228B 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 P228B 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.

Need more information about the P228B GMC code?

Need more information on how to fix the P228B GMC code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P228B GMC code diagnosed by a professional: Find a repair shop in your area

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 P228B GMC Code

1. What are the common symptoms of OBDII code P228B GMC?

The common symptoms of OBDII code P228B GMC include engine stalling, rough idling, loss of power, and difficulty starting the vehicle.

2. What can cause the OBDII code P228B GMC to trigger?

The OBDII code P228B GMC is typically triggered by a malfunction in the fuel pressure regulator 2 control system, leading to a forced engine shutdown by the vehicle's computer.

3. How can I diagnose the cause of the OBDII code P228B GMC?

Diagnosing the cause of the OBDII code P228B GMC usually involves checking the fuel pressure regulator 2 control system for proper operation, inspecting for any leaks or damage, and testing the fuel pressure sensor.

4. What are some repair tips for resolving the OBDII code P228B GMC?

Some repair tips for resolving the OBDII code P228B GMC include checking and replacing the fuel pressure regulator, inspecting and repairing any damaged fuel lines, and resetting the vehicle's computer after making repairs.

5. Can I drive my vehicle with the OBDII code P228B GMC?

It is not recommended to drive your vehicle with the OBDII code P228B GMC, as it indicates a potential issue with the fuel pressure regulator 2 control system that could lead to engine shutdown while driving.

6. How urgent is it to address the OBDII code P228B GMC?

It is important to address the OBDII code P228B GMC promptly to avoid potential engine stalling and other drivability issues that may arise from a malfunctioning fuel pressure regulator 2 control system.

7. Are there any common mistakes to avoid when dealing with the OBDII code P228B GMC?

Common mistakes to avoid when dealing with the OBDII code P228B GMC include ignoring the issue, attempting temporary fixes, and not thoroughly inspecting the fuel pressure regulator system.

8. Can a DIY enthusiast repair the OBDII code P228B GMC?

While some DIY enthusiasts may be able to diagnose and repair the OBDII code P228B GMC, it is recommended to seek professional help to ensure the issue is properly resolved and prevent further damage.

9. Does the OBDII code P228B GMC affect fuel efficiency?

Yes, the OBDII code P228B GMC can affect fuel efficiency as it disrupts the proper regulation of fuel pressure, leading to inefficient fuel delivery and combustion in the engine.

10. How much does it typically cost to fix the OBDII code P228B GMC?

The cost to fix the OBDII code P228B GMC can vary depending on the specific cause of the issue, but it may range from a few hundred to a few thousand dollars, including parts and labor.

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