2000 Other Suzuki Models Replacing O2 sensors

GATEKEEPER37

MEMBER
2000 SUZUKI
4 CYL
FWD
AUTOMATIC
159,000 MILES

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.

5 Replies

BLACKOP555

EXPERT

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?

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Friday, April 11th, 2008 AT 7:28 PM

GATEKEEPER37

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The code is P0440

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Saturday, April 12th, 2008 AT 8:00 PM

BLACKOP555

EXPERT

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

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Saturday, April 12th, 2008 AT 9:32 PM

GATEKEEPER37

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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?

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Monday, April 14th, 2008 AT 2:20 PM

BLACKOP555

EXPERT

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.