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Robert, have vehicle scanned for diagnostic codes. Check for vacuum leaks and if you have not done recently give vehicle a complete tune up cap,rottor,wires,plugs,filter's,etc, including injector/throttle body cleaning. Check the attached links,instruction and guides, Good luck
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a bank 1 or a bank 2 generally means an 02 sensors bad. or you may simply have a faulty gas cap. i would try the gas cap 1st,make sure it's tight, the engine running for a few minutes,then cut engine off. then open gas cap,do you hear pressure [air] releasing from the fuel tank? ok if not that,then if bank 2 is really bad,your check engine light would be on. but if the idle control sensor is bad,no light would be on at all. and it[engine] would idle up and down.or would'nt idle at all,or would idle up and down,just like what you've described. good luck and thank you for choosing fixya.com and please let me know if i'ved assisted you!
Small emission leak would indicate to me that the exhaust is leaking, maybe, throwing off the O2 sensor.
If it's an evaporative leak, then I would make sure the gas cap is on tight, and that the filler tube is connected with a vapor tight connection to the tank, and that the tank has no leaks in it.
i would try the gas cap first. if the gas cap isnt on tight or wright that will make the check engine light come on and so forth. but check your gas cap first. hope this helps!
A P0147 is caused by a failure in the O2 sensor heater circuit. The heater circuit is used to allow a more accurate reading (for O2 sensor) while system is below normal operating temperature. The only way to properly fix this problem is to replace the O2 sensor, however you can clear the code and it may be a few days before it comes back [and sets check engine light]. This condition is somewhat common on GM vehicles of that age.
most any sensor going bad can cause the check engine light to come on,try disconnecting the posative battery cable for 15 seconds ,then put it back on,will reset the codes, or take it to auto zone,they will test your computer for codes at no charge to you.i had a venture van my was ox. sensor. thanks robert b.
P0410 is a problem in the secondary air injection system. there are many thing that can cause a check engine light in this system. p0416 does not come up in any of my charts. Tech JK ----------------
Could be....I would first very simply check the gas cap. A loose or cracked gas cap could cause an O2 (oxygen) sensor to react and light up your "check engine" light. if the cap is indeed tight it may be an actual faulty sensor, in which case I would have your ODB plug under the steering wheel read by the infiniti dealer. Devoe infiniti is great here in Naples, FL!
Hope this helps,
NGK
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