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Discussion Starter · #1 ·
I was drivin hauling my 2 four wheelers and engine light came on the codes that came up r P0406 and P0489 anybody can help and see if it's sum little cuz it drives the same
 

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were you hard on the throttle? did the lightning bolt flash?
 

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I got this of a thread awhile back...it listed all the codes


P0489-egr Control Circuit Low

I couldn't find a 0406 but did find

P040b-exhaust Gas Recirculation Temperature Sensor 1 Circuit Performance
 

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Discussion Starter · #4 ·
Naw the truck was on cruze control and just came on then when i stoped i checked the codes truck runs fine
 

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p0406- EGR POS SENS VOLTS TO HI.

guess if you were waiting for it io break til you chop it out, now is the time!!!!!!!!
 

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Discussion Starter · #6 ·
So is it not drivable or what cuz it runs like nuthing is the matter and the over head messages says system is fine
 

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WHeres the thread that says all of the codes? Could someone give me a link
 

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Discussion Starter · #9 ·
so sensor is high is that mean it can mess up my truck
 

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I just got P0406 today and also P245A.

What does Sensor to high do to the truck?
 
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