Fuel pump replaced/ now/ pedal sensor

Discussion in 'Gen 3 Prius Technical Discussion' started by davev1pa, Jul 26, 2025 at 2:31 AM.

  1. davev1pa

    davev1pa Junior Member

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    2010 Prius base . Son was 700 miles away . Died on interstate: hybrid battery needs checked. Towed to dealership. Fuel pump failure. Had it towed to small shop: fuel pump now replaced but now reads a code for accelerator pedal and sensor. Dealership said they only read a code for fuel pump.. order the pedal.The car runs for 30 seconds then dies.Pretty sure the hybrid is going to be too low with all these non regenerative start ups. Thoughts?
     
  2. ChapmanF

    ChapmanF Senior Member

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    Make sure the shop tells you the actual five-character trouble code, not just what they think it "means".

    Then look for that code in this post.

    The Prius has both a throttle position sensor and a pedal position sensor, completely different parts in completely different places, and because of the way SAE standardizes trouble codes, all the trouble codes for those two different things have fortune cookies starting with the words "throttle/pedal position sensor/switch".

    If you're not paying real close attention to exactly which code(s) you have, you end up wasting time and money on the wrong part in the wrong place.
     
  3. Eddie25

    Eddie25 Active Member

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    Make sure it has gas, the gas gauge can "get stuck" making it look like it has gas when it doesn't.

    Edit: Actually it's the part of the fuel pump that informs the gas gauge that gets stuck so if they replaced the entire pump then that's not it.
     
  4. ChapmanF

    ChapmanF Senior Member

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    The level sender and the pump are both parts of the same assembly you pull out of the tank, but can be replaced separately, so the shop might not have replaced the whole enchilada.

    Don't forget to check the exact "throttle / pedal sensor" trouble code, using the link in #2 above, to be sure whether it is about the throttle sensor or the pedal sensor.

    Don't put off checking that.