P228D: Fuel Pressure Regulator 1 Exceeded Control Limits - Pressure Too High
5 vehicles · 4 makes · $300-$12,000 repair
Most Reported On
P228D is an OBD-II diagnostic trouble code meaning “Fuel Pressure Regulator 1 Exceeded Control Limits - Pressure Too High.” This powertrain code means the engine computer detected that fuel pressure controlled by fuel pressure regulator 1 went higher than the desired/commanded level, beyond acceptable control limits. The system continuously adjusts the regulator to hold target fuel rail pressure; when actual pressure stays too high, this code sets. Excessive fuel pressure can cause a rich mixture, rough running, hard starting, and over time can stress injectors and the catalytic converter. It should be diagnosed promptly to avoid drivability and emissions problems. This code is most commonly reported on 2018-2024 Volkswagen Atlas, 2016-2024 Chevrolet Camaro, and 2011-2016 Chevrolet Silverado 2500HD, plus 2 other vehicles, with repair costs ranging from $300 to $12,000.
Common Causes
Typical Repair Cost
Based on 5 documented vehicle-specific issues. Actual cost depends on root cause and vehicle.
Diagnostic Tools
To diagnose P228D, you'll need an OBD-II scanner. Here are our recommendations at every price point.
ANCEL AD310 Classic OBD-II Scanner
by ANCEL
A simple, affordable code reader that reads and clears check engine codes. Great for quick diagnostics on any OBD-II vehicle (1996+).
- Read & clear engine codes
- View freeze frame data
- I/M readiness status
- No batteries or app needed
BlueDriver Pro Bluetooth Scanner
by BlueDriver
Bluetooth OBD-II scanner with a free companion app. Provides enhanced diagnostics, smog readiness, and repair reports sourced from a database of verified fixes.
- Enhanced diagnostics (ABS, SRS, transmission)
- Repair Reports with verified fixes
- Smog check readiness
- Free app (iOS & Android)
LAUNCH CRP123X OBD-II Scanner
by LAUNCH
A professional-grade handheld scanner that reads all four major systems (engine, transmission, ABS, SRS) with live data streaming and graphing.
- Engine, transmission, ABS, SRS diagnostics
- Live data stream & graphing
- AutoVIN for vehicle identification
- Free lifetime updates via Wi-Fi
Autel MaxiCOM MK808S Diagnostic Tool
by Autel
Shop-level diagnostic tablet with bi-directional control, active tests, and full system coverage. Ideal for serious DIYers and small shops.
- All-system diagnostics (25+ modules)
- Bi-directional control & active tests
- Oil reset, EPB, BMS, TPMS, injector coding
- 7-inch touchscreen with Android OS
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Vehicles Affected (5)
FAQ
What does P228D mean?
P228D stands for "Fuel Pressure Regulator 1 Exceeded Control Limits - Pressure Too High." This powertrain code means the engine computer detected that fuel pressure controlled by fuel pressure regulator 1 went higher than the desired/commanded level, beyond acceptable control limits. The system continuously adjusts the regulator to hold target fuel rail pressure; when actual pressure stays too high, this code sets. Excessive fuel pressure can cause a rich mixture, rough running, hard starting, and over time can stress injectors and the catalytic converter. It should be diagnosed promptly to avoid drivability and emissions problems.
What are the most common causes of P228D?
The most common causes of P228D are: Faulty fuel pressure regulator (sticking closed/restricted), Faulty fuel rail pressure sensor, Restricted fuel return line or path, Wiring or connector fault on the regulator circuit, Mechanical high-pressure fuel pump fault, Faulty engine control module (less common). The specific cause varies by vehicle.
How much does it cost to fix P228D?
Repair costs for P228D range from $300 to $12,000, depending on the vehicle and root cause.
Which vehicles are affected by P228D?
Au7o has documented P228D across 5 vehicle models from 4 manufacturers: Chevrolet, GMC, Subaru, Volkswagen.
Sources (9)
- ForumBad fuel pump? - Camaro5 Chevy Camaro Forum
- articleChevy Camaro won't start - causes and how to fix it
- ForumDiesel Place Forum Thread: CP4 Fuel Pump Failure on LML Duramax
- RecallNHTSA Recall 21V-587 / WRG-21 Low-Pressure Fuel Pump
- manufacturerWRG-21R Bulletin - Subaru of America (NHTSA-hosted)
- ForumFuel pump recall - Subaru Ascent Forum
- RecallGMC Terrain Recalled For Inadequate Fuel Pump Flow Issue - GM Authority
- RecallProduct Safety Recall N222372310 Inadequate Fuel Pump Flow - NHTSA
- article2022 GMC Terrain Stalling? Fuel System / Fuel Pump Problem + Recall - Lemberg Law
Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.