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.
Tundra flashing low 4 check eng lights (1 Viewer)
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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.
I’m researching this for my sons Tundra. It’s a spendy fix but a by pass is available at less than $275. If I read it right, if a pump goes it can put you in limp mode. If it’s just a stuck valve, you have to live with the dash light. However, there must be many on here who have navigated this and I’d love to hear from them!
