Reduced Engine Power

[roc111672]

I pulled out of the driveway this morning and reduced engine power popped up on the dash . I have a 2006 chevy 1500 with a 6.0L . with 70,000 miles on it . I have a Bully Dog programmer so i checked my codes .

This is what i got .

PO442

PO449

PO445

P1516

P2108

U0107 Map Low Voltage

 

Any ideas what they all mean ?

 

Thanks for any help , Rusty

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The first three have nothing to do with the reduced engine power, but instead a seperate evap canister problem these truck were prone to. The two next p codes are what's doing the reduced power, either the throttle actuator is going out or you have loose connection at the actuator on the TB, I bet the latter as it's a pretty common problem. Unplug the TB and plug it up a couple times and see if it goes away for a while, the wires are very frail so be careful while doing this.

[roc111672]

The first three have nothing to do with the reduced engine power, but instead a seperate evap canister problem these truck were prone to. The two next p codes are what's doing the reduced power, either the throttle actuator is going out or you have loose connection at the actuator on the TB, I bet the latter as it's a pretty common problem. Unplug the TB and plug it up a couple times and see if it goes away for a while, the wires are very frail so be careful while doing this.

 

 

Thanks for the reply , the info is very helpful . I will check the wires when i get home to see if the connection is loose or if the yellow wire is broken . I cleared the codes and am waiting to see what codes i get now . I put a new gas cap on so i hope atleast one of them goes away . I guess i will change the actuator if the codes come back .