P0440 on the 2003 Pontiac Bonneville
The bulletins listed name this code in NHTSA's summary, or are about the same components. A bulletin or a recall listed here may apply to the model year. None of it is a diagnosis.
Nobody has written a description of this code yet.
| 09182002 | 2004-10-01. Service bulletin. 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, DAMAGE TO THE FUEL LEVEL VENT VALVES, OR THE EVAP CANISTER BEING FLOODED WITH RAW FUEL. *TT |
|---|---|
| 060703 | 2003-10-29. Service bulletin. TECHNICAL TELECAST REGARDING CONNECTOR ISSUES, P0573; AIR CONDITIONER COMPRESSOR FAILURE; MEDTRONIC TESTER; 02 SENSOR; CLUNK NOISE ON 2/3 UP SHIFT, 3/2 DOWNSHIFT, AND P0440 FUEL CAP ISSUES. *TT |
2 on file from NHTSA, as of 2026-10-19. See them in the bulletin list. A bulletin lists model years: read the document for which vehicles it concerns.