2003 Pontiac Grand Prix Service Engine Soon Light On P0440 Code This Indicates

2003 PONTIAC GRAND PRIX
157,000 MILES
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TWATMAN87
  • MEMBER
  • 1 POST
My service engine soon light is on and it is a P0440 code. This indicates a problem with the evap system. I have replaced the gas cap and the purge solenoid and the light keeps coming on. Are there any other valves that could be causing this problem or is it more likely a cracked hose? PLEASE HELP!
Dec 4, 2012 at 9:33 AM
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RASMATAZ
  • ✓Experienced Mechanic
  • 75,988 POSTS
Have the Evap system smoke tested for leakage-
Dec 4, 2012 at 9:40 AM
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