Question about 2003 Pontiac Sunfire

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2003 pontaic sunfire had new 02 sensor put in check engine light came back on?

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Are you reset the other store codes after to new O2 replace?

Try it and tell us news.

Posted on Jul 08, 2010


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The engine light stays on, it has an 02 sensor. It may need a new cadillac converter and cv joint.

check engine light on when tested it says bad o2 sensor did you replace 02 sensor it takes driveing it so many miles before light will go off give it couple days you dont need cadillac converter check engine light will go off cv joint they click as you turn dont let a mechanic sell you something you dont need its very rare for cadillac converters to go bad its common for o2 sensors to go bad like yours did but when 02 sensors are replaced it takes driveing it for awhile before it resets itself you also have more then one 02 sensor was then wrong one replaced they screw into your exaust manifold

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I put a new fuel injector in a 1996 pontaic sunfire now the engine floods out with gas

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Need to change O2 sensor check engine light wont go off

Did you change the 02 sensor? The back one after the converter? If so, stop by a dealer, it may need to be reset.The back 02 is the one that trips the light. Keep that in mind.

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03 impala check engen light stays on and scanner reads, "02 heater sensor malfunction" and i just changed the 02 sensor and reset the light.

vehicle may have more than 1 o2 sensor. have u checked to see if it has more? most vehicles have more than 1

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