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My service engine soon light went on. I had a diagnostic run on my 2001 infiniti I30..it showed a code p040. The car does not run rough and starts right up..what does this mean?

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

  • 13 Answers

SOURCE: Timing chain on 2000 Infiniti I30

timming chain not belt . its a really big job i suggest the dealer.to much work and u need a lift to do the job!

Posted on Jun 22, 2008

  • 54 Answers

SOURCE: Service engine soon light

in your manual inside your glove box it will tell you how to restet the service due soon message, or the mechanic should do it when he/she services your car.

Posted on May 16, 2009

pingman37
  • 58 Answers

SOURCE: MY 2001 INFINITI QX4 KEEPS SAYING SERVICE SOON

First off, make sure that the gas cap is tightened beyond three clicks. If it is and has been then there are many things that could be causing the light to come on. But let me start by assuring you that it is not something that requires immediate attention. The sole purpose of the service engine light is to detect malfunctions of emissions related components. If the gas cap isn't tight, the computer system detects an incorrect amount of pressure inside the tank due to vapor leaking out of the filler neck. If the cap is tightened after a period of time the computer detects the right pressure and the light will go off. However, on QX4's the most common cause of the light is oxygen sensors, or cam and crank position sensors, and finally intake valve timing control sensors or solenoids. O2 sensors measure the amount of oxygen in the exhaust gas. Normally I have seen that in damp and wet conditions these sensors are more likely to intermittenly give false readings. That being said, although the SES light is not an emergency situation, it will need to be addressed at some point, as the Engine control module takes the readings from these various sensors and automatically adjusts things like idle control, and air fuel mixture ratio, and eventually will to some point affect the performance of the vehicle. I have seen folks drive 100K miles with a service engine light on, so if you don't want to spend a 200 or so dollars right away, I would take the car to autozone, have the codes retrieved, and report back to this forum, at that point I would be able to advise you a little further. But more than likely you could continue driving the car without any driveablility issues.

Posted on Jun 16, 2009

  • 1 Answer

SOURCE: infiniti i30 bose stereo volume will not change

i have this deck...just put it on craigslist...if you pop out the heater vents the screws become visible to remove the unit. The screws on the side of the deck itself tend to be in tightly...but they will come out. my name is justin 2539051585

Posted on Feb 05, 2010

  • 743 Answers

SOURCE: 2001 buick century 3.1 ltr abs light on , service

You could be encountering computer failure. Needs to be looked at.

Posted on Mar 07, 2010

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