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Po440 Code


rokimbal

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Posted

Hi...I have a 2000 Chevy S10. I keep getting a PO440 code. I did the first quick fix by replacing my gas cap. Still comes on. I then replaced the (EC3048P) air sensor. The check engine light remains off for an average of 150 miles, then comes on again. Any advice on where to go next?

Posted

p0440 is an evap system leak. Could be any of the lines, purge solenoid, vent solenoid, control module, or related wiring. Need to test the system and check for leaks.

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