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Discussion Starter #1
I'm new to the group here and have a problem with my 2008 Tundra 5.7.

As I was driving down the road towing a small trailer, the following lights came on...

Check engine light (NOT flashing)
VSC (Flashing)
Traction control (NOT flashing)
4 Lo (Flashing)

The truck runs and accelerates normal except it won't shift past 4th gear. Doesn't matter if I am in DRIVE or S mode. It is NOT in limp mode. I checked the back up light fuse and it is good. Anybody have any suggestions?
 

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Discussion Starter #2
Just did some reading about someone who had a mouse problem. Mice chewed up wires on a knock sensor? Sound right?
 

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Discussion Starter #4
Codes read. Comes back as "P032D Engine Knock Sensor 3 ckt". You can see evidence of mice in the general vicinity. There are a bunch of knock sensor codes so I don't know what this exact one means but I know it isn't good.
 

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When my AIP died it went into limp mode for about 30 mph tops with the same type of light indicators.
 

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I’ve got this exact same problem but the dealer said it was a solenoid I’m the tranny according to their code. #4. Maybe they don’t know what they are doing?
 
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