Reference meaning
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.
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A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
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.
Scan worksheet →Manufacturer wording
Source wording can vary by vehicle and suffix. It is shown as written, not as a universal diagnosis.
P0440General EVAP System Failure
P0440General EVAP System Failure
P0440General Evap System Failure
Manufacturer communications
48Original wording in English
DODGE
Flash: Powertrain Control Module (PCM) Updates Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find that one or more of the following Diagnostic Trouble Codes (DTCs) have been set: ? P0455 - EVAP System Large Leak. ? P0456 - EVAP System Small Leak. ? P0440 -…
DODGE
Flash: Powertrain Control Module (PCM) Updates Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find that one or more of the following Diagnostic Trouble Codes (DTCs) have been set: ? P0455 - EVAP System Large Leak. ? P0456 - EVAP System Small Leak. ? P0440 -…
DODGE
Flash: Powertrain Control Module (PCM) Updates Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find that one or more of the following Diagnostic Trouble Codes (DTCs) have been set: ? P0455 - EVAP System Large Leak. ? P0456 - EVAP System Small Leak. ? P0440 -…
CHRYSLER
Flash: Powertrain Control Module (PCM) Updates Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find that one or more of the following Diagnostic Trouble Codes (DTCs) have been set: ? P0455 - EVAP System Large Leak. ? P0456 - EVAP System Small Leak. ? P0440 -…
Check vehicle applicability
89A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
| Make | Model | Model year |
|---|---|---|
| Alfa Romeo | 4C SPIDER ↗ | 2017 |
| Alfa Romeo | GIULIA ↗ | 2017 |
| Buick | BUICK ↗ | Year unknown |
| Buick | LESABRE ↗ | 2004 |
| Buick | PARK AVENUE ↗ | 2004 |
| Buick | RAINIER ↗ | 2004 |
| Buick | REGAL ↗ | 2004 |
| Cadillac | CADILLAC ↗ | Year unknown |
Code meaning and manufacturer information
Original wording in English · Historical directory labels; manufacturer applicability has not been established for every entry.
Evaporative Emission Control System Malfunction
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.