Question about 2003 Saturn VUE

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SES light (again!)

About a year ago my SES light continued to come on and I had trouble starting up the car after fueling up. They replaced the thermostat. Now the SES light is on again (code 0440) and its another emissions code. Is this a common problem with the Vues?

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P0440 code is EVAP control system problem.This has to do with emissions from the carbon can, fuel tank and general leaks that come from fuel evaporation. Anywhere gas fumes can escape the systerm. This code is very common and can be caused by a simple fuel cap being loose or leaking. Check the fuel cap and reset the coputer. If the SES light comes back on there could be a problem with some of the systerm controls. ie vent valve,purge valveand canister. And /or vac leaks.

Posted on May 26, 2009

  • Moe May 26, 2009

    Your car is equipped with OBDII and you cannot reset your computer by dissconnecting the battery. This can only be done with a code reader. P0440 is an EVAP code not an O2 code.

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SES light means SERVICE ENGINE SOON.

The code 0440 indicates o2 sensor (lean exhaust) it is a good thing you had a scan but did you turn the memory off the error message the previous time?

I will give you the procedure:-
Diagnostic trouble codes may be cleared by disconnecting the battery ground cable for at least 20 seconds. Reconnect negative battery cable and recheck codes to confirm the repair.

Please rate this.

Posted on May 26, 2009

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