Question about 2004 Nissan Sentra

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Fault Code reads MAF Sonsor even after replacing the part

Our 2004 Nissan Sentra 1.8 had stalled on us on the freeway. The engine light went on and could still start the car, but couldn't rev it above 2500 rpm. So we had it towed to Auto Zone and had the fault code read. It read that it was the MAF Sensor, so we ordered the part and replaced it. They erased the fault, but after letting the car run for 15 minutes it started idling rough again and the same problem came about. The engine light came back on reading that it wa the MAF Senor again. Could their be anything else that could be causing this problem related to the MAF Sensor?

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  • yadayada
    yadayada May 11, 2010

    u should have had the dealer look at this, the code only indicates a problem in the MAF ctrcuit not ness the MAF, as you have found out the hard way.

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It is very possible that you have an open circuit in your connector. I do agree that aftermarket parts have different resistance valves than the OEM, but in this case I think you have more of an electrical problem than a parts replacement problem. Check continuity from the MAF connector to the ECM. Make sure you clean out the air cleaner box and install a new OEM air filter. Aftermarket filters don't alway fix properly and can leave an air gap around the filter. This can allow debris to enter the engine and also contaminate your MAF.

Posted on Jul 22, 2009

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Most cases when the MAF sensor is replaced, and doesn't work. It's because it was replaced with a After Market one. I have not seen a After Market one work yet! I have replaced many brand new ones with the factory ones to correct this issue. The internal resistances on after market MAF sensors are not correct, there for they never work. I know they are cheaper, but the only way to correct this would be to put a Nissan one in.

Thanks Jay!

Posted on Jul 21, 2009

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