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 communications
3Original wording in English
BUICK, CHEVROLET, PONTIAC
Reported code forms P0440
LOOSE FUEL CAP MESSAGE AND DIAGNOSTIC TROUBLE CODE (DTC) P0440, P0455. *TT *MJ
BUICK, CHEVROLET, PONTIAC
Reported code forms P0440
DIAGNOSTIC TROUBLE CODES P0440 AND P0455, ALONG WITH A LOOSE FUEL CAP MESSAGE DISPLAYED ON THE DIC ON VEHICLES WITH 3800 ENGINE APPLICATIONS. *TT
PONTIAC
Reported code forms P0440
SERVICE ENGINE SOON MESSAGE BEING DISPLAYED, ENGINE STUMBLES OR STALLING, OR A DIAGNOSTIC TROUBLE CODE P0440, FOR LARGE LEAK BEING SET AFTER FILLING THE VEHICLE WITH FUEL. THERE MAY ALSO BE DAMAGE TO THE FUEL TANKS,…
Check vehicle applicability
3A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
| Make | Model | Model year |
|---|---|---|
| Pontiac | BONNEVILLE | 2004 |
| Pontiac | BONNEVILLE | 2003 |
| Pontiac | BONNEVILLE | 2002 |
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.