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Need help with Camshaft sensors.

Discussion in 'General Tundra Discussion' started by dtbr, May 25, 2025.

  1. May 25, 2025 at 8:26 AM
    #1
    dtbr

    dtbr [OP] New Member

    Joined:
    May 24, 2025
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    First Name:
    gary
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    2009 Tundra SR5
    I have an 08 5.7 Tundra. The MIL and TCS lights are on solid, the VSC and 4LO lights are flashing. I have codes P0343, 0348, 0393, 1343. I have "bench tested" all five sensors and they seem to work fine, I backprobed all of them and only have two working properly. The main sensor and bank 1 exhaust.
    I took the time to move each sensor to the known good location and back probe each individually and all work properly. Pig tails have all been replaced and checked back to corresponding pins of ECM socket. The codes still return immediately upon turning the ignition. Now the kicker is that the truck runs and drives just fine!!
    So now after the long winded explanation, can someone tell me if when you pull the connector from the sensor and check voltage in the connector with key on, should you only get the power voltage? I have voltage there and the at the signal wire.
     
  2. May 25, 2025 at 9:31 AM
    #2
    2mchfun

    2mchfun Cool story, but did your new TTV6 tow a shuttle?

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    Seat covers, dash mat, ext. Trans. Cooler, sumo springs, oem pwr fld tow mirrors
  3. May 25, 2025 at 5:52 PM
    #3
    dtbr

    dtbr [OP] New Member

    Joined:
    May 24, 2025
    Member:
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    Messages:
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    Male
    First Name:
    gary
    Vehicle:
    2009 Tundra SR5
    Thanks for the link to the chart, looks like ECM is a possibility. It doesnt seem right to me to have 5+ volts on the power side and the signal side when the unplugged from the sensor.
     

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