P228C GMC Code - Fuel Pressure Regulator Control Performance Low Pressure
Quick Answer
The fuel rail pressure sensor detects fuel pressure within the fuel rail. Common causes include Faulty Fuel Rail Pressure Sensor, High Pressure Fuel Pump harness is open or shorted, High Pressure Fuel Pump electrical circuit poor 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
- P228C GMC indicates Fuel Pressure Regulator Control Performance Low Pressure.
- Common causes
- Common causes include Faulty Fuel Rail Pressure Sensor, High Pressure Fuel Pump harness is open or shorted, High Pressure Fuel Pump electrical circuit poor 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 P228C GMC Description
High pressure fuel is regulated by the high-pressure fuel pump actuator, which is a part of the high-pressure fuel pump. The high-pressure fuel pump actuator is a solenoid valve. The ECM provides a voltage on the actuator high control circuit and ground on the actuator low control circuit. Both circuits are controlled through output drivers within the ECM. When deactivated, both drivers are disabled. When activated, the high control circuit driver energizes the high-pressure fuel pump actuator, and the low control circuit driver Pulse-Width Modulates (PWM) the low control circuit to ground.
The high-pressure mechanical fuel pump is driven by three lobes on the camshaft. The ECM uses the camshaft and crankshaft position sensor inputs to synchronize the high-pressure fuel pump actuator with the position of each of the camshaft lobes. The ECM regulates fuel pressure by adjusting the portion of each pump stroke that provides fuel to the rail.
The ECM monitors the fuel rail fuel pressure sensor and the high-pressure fuel pump actuator to determine if the commanded and actual pressure are within a predetermined range, or if the amount of fuel pressure correction exceeds a calibrated pressure.
The Diagnostic Trouble Code (DTC) will set if the actual fuel rail pressure is 3 MPa (435 psi) less than the desired fuel pressure. The condition exists for greater than 5 s.
What are the Possible Causes of the DTC P228C GMC?
- Faulty Fuel Rail Pressure Sensor
- High Pressure Fuel Pump harness is open or shorted
- High Pressure Fuel Pump electrical circuit poor connection
- Faulty High Pressure Fuel Pump
How to Fix the DTC P228C 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 P228C 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 P228C GMC code?
Need more information on how to fix the P228C GMC code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P228C GMC code diagnosed by a professional: Find a repair shop in your area
Information for Specific GMC Models
- P228C 2014 GMC Sierra — Fuel Pressure Regulator Control Performance Low Pressure
- P228C 2015 GMC Sierra — Fuel Pressure Regulator Control Performance Low Pressure
- P228C 2016 GMC Sierra — Fuel Pressure Regulator Control Performance Low Pressure
- P228C 2017 GMC Sierra — Fuel Pressure Regulator Control Performance Low Pressure
- P228C 2018 GMC Sierra — Fuel Pressure Regulator Control Performance Low Pressure
Frequently Asked Questions about P228C GMC Code
1. What are the common symptoms of OBDII code P228C GMC (Fuel Pressure Regulator Control Performance Low Pressure)?
- Common symptoms include rough idling, engine stalling, lack of power or acceleration, and decreased fuel efficiency.
2. What are the possible causes of OBDII code P228C GMC?
- The code can be triggered by a faulty fuel pressure regulator, clogged fuel filter, fuel pump issues, vacuum leaks, or a problem with the fuel pressure sensor.
3. How can I diagnose the cause of OBDII code P228C GMC?
- To diagnose the issue, you may need to perform a fuel pressure test, inspect the fuel pressure regulator, check for vacuum leaks, and scan for any related codes.
4. Can a dirty fuel injector cause OBDII code P228C GMC?
- While a dirty fuel injector may not directly trigger this specific code, it can contribute to fuel delivery issues that may lead to the code being set.
5. What are some repair tips for fixing OBDII code P228C GMC?
- Repair tips may include replacing the fuel pressure regulator, cleaning or replacing the fuel filter, checking and repairing any vacuum leaks, and ensuring proper fuel system operation.
6. Is it safe to continue driving with OBDII code P228C GMC present?
- It is not recommended to drive with this code present as it can lead to poor engine performance and potential damage to the fuel system components.
7. Can resetting the check engine light clear OBDII code P228C GMC?
- Resetting the check engine light may temporarily clear the code, but if the underlying issue is not addressed, the code is likely to reappear.
8. How much does it typically cost to repair OBDII code P228C GMC at a mechanic?
- The cost of repair can vary depending on the cause of the issue, but it may range from $100 to $500 or more, including parts and labor.
9. Will OBDII code P228C GMC cause a vehicle to fail an emissions test?
- Yes, this code can cause a vehicle to fail an emissions test due to its impact on fuel system performance and emissions control.
10. Can a DIY enthusiast fix OBDII code P228C GMC at home?
- Depending on the specific cause of the code, some DIY enthusiasts may be able to address the issue at home by following repair guides and using appropriate tools.
Discuss the causes and fixes for P228C GMC OBDII Code
Code P228C GMC comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
