engine check light on


Old 01-26-02, 08:31 AM
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engine check light on

I have a Nissan Maxima 1996 which I bought as a used car. After travelling for 180 km, the engine check light turned on. I sent it to a Nissan dealer and they said the problem were the rear oxygen sensor & the knock sensor and needs to be replaced. I scheduled it to be replaced later but when they returned the car to me, the light was gone. The dealer said it will turn on again. I have used the car for 200 km and the light has not turned on yet. What does this mean? Is the car OK. If the car is well, maintained (properly tuned up, was newly oil changed) does the engine check light matters. Is the light related to emission problems or fuel efficiency?
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Old 01-26-02, 11:10 AM
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The light should come on when you turn the key on or start the engine at which time it'll stay on for a second or two and then go out if there's no problems.
From your posts it seems like your saying since the car was repaired you haven't seen the light at all again even when initially starting the car.If it doesn't come on when you turn your key on ,then you do have a problem.Lets us know if the light still comes on and proves out.it should if working correctly.
Old 01-26-02, 11:36 AM
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No doubt they reset the light; it will probably come back on sooner or later assuming, like fordtech said, that it comes on properly for the lightbulb check when you first turn the key on. You didn't say how many miles on the car, but it could be due for either of those two items any time. Likely one or both of the items are slowing deteriorating (normal) and are right at the point of needing replacement, so it may take some more driving before the check engine comes back on. Even properly maintained cars will eventually need these kinds of replacements, expecially the O2 sensor. And yes it is related to both emissions and fuel efficiency although not always severe enough to be noticable. Before you spend big bucks getting the work done at a dealership, you might check prices at a good independent garage; you may find significant savings, especially since, for instance, a Bosch O2 sensor could be a lot less expensive than the genuine Nissan part that the dealership will have to put in and will perform every bit as well. Good luck.
Old 01-26-02, 04:04 PM
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I agree with all stated by these guys.
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