AutoCodes – Generic – P228A

P228A Code - Fuel Pressure Regulator 1 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 1, Fuel Pressure Regulator 1 harness is open or shorted, Fuel Pressure Regulator 1 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: P228A indicates Fuel Pressure Regulator 1 Control Forced Engine Shutdown.
Common causes: Common causes include Faulty Fuel Pressure Regulator 1, Fuel Pressure Regulator 1 harness is open or shorted, Fuel Pressure Regulator 1 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 7,212

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jul 27, 2021

Description
Possible Causes
How To Fix
Cost to Diagnose
Comments
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Code P228A 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 P228A - Fuel Pressure Regulator 1 Control Forced Engine Shutdown - AutoCodes.com — P228A Code - Fuel Pressure Regulator 1 Control Forced Engine Shutdown

What does this mean?

What are the Possible Causes of the DTC P228A?

Faulty Fuel Pressure Regulator 1
Fuel Pressure Regulator 1 harness is open or shorted
Fuel Pressure Regulator 1 circuit poor electrical connection
Faulty Fuel Injector

How to Fix the DTC P228A?

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 P228A 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 P228A code?

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Information for Specific Makes

P228A Buick — Fuel Pressure Regulator 1 Control Forced Engine Shutdown
P228A Cadillac — Fuel Pressure Regulator 1 Control Forced Engine Shutdown
P228A Chevrolet — Fuel Pressure Regulator 1 Control Forced Engine Shutdown
P228A Ford — Fuel Pressure Regulator 1 Forced Engine Shutdown
P228A GMC — Fuel Pressure Regulator 1 Control Forced Engine Shutdown

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.