Car Problem Reports

Nissan Altima Check Engine Light/Loss of Power Due to Throttle Body Unit Failure

Nissan Altima Problem
27 Reports
Me Too

Model Years Affected: 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010

Average Mileage: 111,819 mi (65,000 mi - 200,000 mi)


The electronic throttle actuator (throttle body) can fail causing a loss of power and illumination of the Check Engine Light.

  • Visitor, , 200,000 mi

    when driving on the expressway - my car will not excelerate past 50 or 60 mpr and the speed limit is 70 - I have to pull over shut the car off wait about 5 or 10 minutes then crank it up and go (not happy at all

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  • Visitor, , 90,000 mi

    right after getting gas, throttle went bad. actually at the pump!

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  • Throttle body intermittently failed near new. During highway driving, engine would remain running, but at idle. Throttle had no effect. Was replaced under warranty, no furhter issue.

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  • Visitor, , 66,000 mi

    Check Engine light came on. Three days later the car would not excellerate but stayed at idle. Re-started engine and was able to dive it to the dealership. Was told it needed a new thrttle body according the Nissan. I never had such an issue with any other other cars.

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  • Visitor, , 70,000 mi

    Light came on. I figured it may go off, like it was a gas cap issue. Took it to the nissan dealer paid $121.00 and they said they couldnt find anything wrong. But the code was coming up P2101 throttle body actuator. They reset the computer and cut the light off. Told me if it comes on again i would have to have the throttle body replaced. $1042 was the out the door quote. Havent gotten it fixed as of yet. Waitting to scrape up the $1000.

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  • Visitor, , 115,234 mi

    Driving then no acceleration gas pedal press on gas engine revs not moving replaced w new throdle housing runs great

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  •  Rookie

    I have not have diagnosis yet, but this too sound like the same problem I am experience. I will be getting a diagnosis to prevent this from happening again.

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  • Visitor, , 65,000 mi

    throttle body / accelerator pedal sensor replaced throttlr body 4 times and replaced accelerator pedal sensor 2 times still not fixed really mad about it

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  • Visitor, , 122,000 mi

    This problem has occured on 3 or 4 occasions. When idling at a stop sign or red light, there was complete loss of power and subsequently service engine light soon came on. Regained control after turning off the engine, but the scary part is it behaves as if all controls are frozen and the car rolls down on a slope without any control.

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  • Visitor, , 180,000 mi

    throttle body

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