What does this code mean?
The wording below belongs to the named make and communication. Match the complete code, reporting module, model year and engine before applying it.
A code identifies a detected condition, not a part that must automatically be replaced.
Manufacturer wording
Source wording can vary by vehicle and suffix. It is shown as written, not as a universal diagnosis.
P009E-73Fuel Pressure Relief Control Performance / Stuck Off - US17+OBD16 And US17+OBD18 ( GHG17 ) Emissions (With Common Rail Fuel System), Commonly Model Years 2018 And 2019P009E - 73Fuel Pressure Relief Control Performance / Stuck Off - GHG17 ( US17 ) Chassis With Common Rail Fuel System, Updated to reflect GHG17 software releaseP009E - 73Fuel Pressure Relief Control Performance / Stuck Off - GHG17 ( US17 ) Chassis With Common Rail Fuel System.Changed repair instructions to reflect new proceduresManufacturer communications
5Original wording in English
MACK
Reported code forms P009E-73
Mack Chassis - Diagnostic Trouble Code ( DTC ) P009E-73 - Fuel Pressure Relief Control Performance / Stuck Off - US17+OBD16 And US17+OBD18 ( GHG17 ) Emissions (With Common Rail Fuel System), Commonly Model Years 2018…
MACK
Reported code forms P009E-73
Mack Chassis - Diagnostic Trouble Code ( DTC ) P009E-73 - Fuel Pressure Relief Control Performance / Stuck Off - US17+OBD16 And US17+OBD18 ( GHG17 ) Emissions (With Common Rail Fuel System), Commonly Model Years 2018…
MACK
Reported code forms P009E-73
Mack Chassis - Diagnostic Trouble Code ( DTC ) P009E-73 - Fuel Pressure Relief Control Performance / Stuck Off - US17+OBD16 And US17+OBD18 ( GHG17 ) Emissions (With Common Rail Fuel System), Commonly Model Years 2018…
MACK
Reported code forms P009E - 73
Diagnostic Trouble Code ( DTC ) P009E - 73 - Fuel Pressure Relief Control Performance / Stuck Off - GHG17 ( US17 ) Chassis With Common Rail Fuel System, Updated to reflect GHG17 software release
MACK
Reported code forms P009E - 73
Diagnostic Trouble Code ( DTC ) P009E - 73 - Fuel Pressure Relief Control Performance / Stuck Off - GHG17 ( US17 ) Chassis With Common Rail Fuel System.Changed repair instructions to reflect new procedures
Check vehicle applicability
14A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
Historical vehicle association; OBD-II compatibility is not established by this record.
| Make | Model | Model year |
|---|---|---|
| Mack | GU | 2018 |
| Mack | GU | 2017 |
| Mack | GU | 2016 |
| Mack | GU | 2015 |
| Mack | GU | 2014 |
| Mack | GU | 2013 |
| Mack | GU | 2012 |
| Mack | GU | 2011 |
| Mack | GU | 2010 |
| Mack | GU | 2009 |
| Mack | GU | 2008 |
| Mack | GU | 2007 |
Historical records · 8 · Historical vehicle association; OBD-II compatibility is not established by this record.
Before replacing a part
Record codes and freeze-frame data. Check battery condition, related codes and visible wiring or hose damage. Follow the vehicle's diagnostic procedure and test results before replacing parts.
Can I keep driving?
A code alone cannot establish whether driving is safe. A flashing malfunction light, severe shaking, overheating, oil-pressure warning or loss of braking or steering needs prompt attention. Stop in a safe place and seek assistance when control or engine safety is affected. Follow the vehicle handbook.