2000 Other Suzuki Models Replacing O2 sensors

2000 SUZUKI
159,000 MILES • 4 CYL • FWD • AUTOMATIC
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GATEKEEPER37
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I have a 2000 Suzuki Esteem that has a check engine light that stays on. Is it possible to replace only one of the O2 sensors and eliminate the check engine light or would it be more effective to replace both at the same time ? It gets horrible gas mileage and runs rough.
Apr 11, 2008 at 5:16 PM
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BLACKOP555
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depends what code is showing up, the first one is only used for engine performance, the second one is catalytic converter efficiency.

what code is the check engine light storing?
Apr 11, 2008 at 7:28 PM
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GATEKEEPER37
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the code is P0440


https://www.2carpros.com/forum/automotive_pictures/177730_New_Image_4.jpg

Apr 12, 2008 at 8:00 PM
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BLACKOP555
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P0440 is evaporative Emission Control System Malfunction

nothing to do with o2 sensors.

causes include
The gas cap is bad or not tightened properly
The purge solenoid is faulty
The canister is plugged or not working properly
Apr 12, 2008 at 9:32 PM
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GATEKEEPER37
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[quote:e43e5fc728="blackop555"]P0440 is evaporative Emission Control System Malfunction

nothing to do with o2 sensors.

causes include
The gas cap is bad or not tightened properly
The purge solenoid is faulty
The canister is plugged or not working properly[/quote:e43e5fc728]


ok I know where the gas cap is (duh) but where are/is the purge solenoid and the canister located and what am I looking for?
Apr 14, 2008 at 2:20 PM
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BLACKOP555
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should be in the engine compartment, not too familiar with your vehicles model.

on the vaccum hose routing diagram they should show you where the canister is broken.

also look on the lines for a cut or crack from the tank to the canister.
Apr 14, 2008 at 7:48 PM