Tundra flashing low 4 check eng lights

Discussion in 'Tundra / Sequoia' started by No jeeep, Sep 13, 2018.

  1. No jeeep

    No jeeep

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    This morning I took off down the road and noticed my check engine light and traction control light came on along with a flashing low 4 light. It's definitely not in four wheel drive. The truck didn't seam to want to down shift and seamed a little sluggish. Has anyone experienced these same symptoms. This just happened 30 minutes ago and I thought I would reach out real quick before I scan for codes tonight. Thanks.
     
    RAGINGMATT likes this.
  2. CRZR45

    CRZR45

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    My 2010 Platinum did a similar thing last week. Started it and the 4lo was flashing but it was in 2wd.. drove it a couple miles and shut it down. On return trip home all was good no lights and all normal.? Curious if anyone has any ideas?
     
  3. No jeeep

    No jeeep

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    Scanned it last night and and got a P2442 P code. Initially it sounds like something related to the Air Switching Valve (ASV) possibly sticking open. That may indicate why your problem was a one and done. My problem still exists and the truck is running about 1/2 power. Anyone with experience on this issue, please feel free to chime in. I'll check for tech. service bulletins (TSB)s today to see if this is a common problem.
     
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