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2007 Tundra check engine, 4lo light flashing, ect.

Discussion in '2nd Gen Tundras (2007-2013)' started by Goldeneagle65, Jul 3, 2020.

  1. Jul 3, 2020 at 8:49 PM
    #1
    Goldeneagle65

    Goldeneagle65 [OP] New Member

    Joined:
    Jul 3, 2020
    Member:
    #48809
    Messages:
    13
    Gender:
    Male
    First Name:
    Brian
    Vehicle:
    2007 Tundra
    hello, I just purchased a 2007 Tundra that was a salvage title vehicle it was just hit in the front end, no significant damage, only bumper and plastics were affected. I have the 4lo light flashing, the check engine light is on, the traction control light is on, but it occasionally goes off. it also occasionally comes on. I understand through research and YouTube that sometimes the problem is chewed wires from rodents on the knock sensor wires. I bought a endoscope camera for my cell phone to examine the knock sensors and wires and I do not see any evidence of rodents or any chewed wires. The engine seems to run just fine. I do not hear or feel anything unusual. the vehicle has 230,000 miles on it. my question is: how do I know if it's a bad knock sensor or if it's a more serious problem with the engine? I took it to AutoZone and it came up with the code p033D circuit 4 knock sensor high limit. or something of that nature. I only have four more days under the lemon law protection to return the vehicle if it's a serious problem. Thank you.
     
  2. Jul 11, 2020 at 5:20 PM
    #2
    blackdemon_tt

    blackdemon_tt Battery Slayer

    Joined:
    Feb 27, 2020
    Member:
    #43241
    Messages:
    2,560
    Gender:
    Male
    Vehicle:
    2007 5.7l Tundra DC SR5 long bed 2wd
    TRD Sway Bar, Roll covers USA bed cover
    If you hear a knock on the engine, it may be a serious problem, if you don't odds are its a sensor issue, or damaged harness..
     
  3. Jul 11, 2020 at 7:06 PM
    #3
    Toyyoda

    Toyyoda New Member

    Joined:
    Jul 10, 2020
    Member:
    #49136
    Messages:
    12
    Gender:
    Male
    First Name:
    Devan
    What did you end up doing with the vehicle? Did you return it?
     

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