Just plugged in my VA3.2 box after getting the truck back a couple of weeks ago. The dealer had the truck to replace the lift pump with the in-tank type.

I don't get the CEL but the three-key does show P0606. I know P0606 is a ECM internal fault code.

Does anyone know what may be causing this?

 

sounds like the box is the cause, right??
unplug the box and see if it clears out?

 

I reconnected the ground cable to a better ground and hopefully that will help. How long does it take to clear a code?

 

The “Check Engine” will turn off by itself if the problem is no longer present after about 3 drive cycles. Each time your vehicle is started and driven the computer’s software commands a wide variety of tests to be performed and monitors various sensors while the vehicle is being driven. A drive cycle is when the vehicle/engine sets long enough for the coolant to drop below a specified temperature. Then the engine is started and the vehicle is driven at different speeds and allowed to reach full operating temperature. The reason for this? The computer not only tests the system, it also monitors for range of operation. Certain tests can only be performed when the engine is cold while others are performed when the engine is hot.If your problem has been corrected, generally the “Check Engine” light will turn off within a day or two of normal driving. If the light does not turn off, there is a system problem and diagnosis is needed

 

53 ******, that's good information to know, thanks. However, my check engine light is not one. The code only shows up on the 3-key test. Does that also go through the same process as the check engine light you described?

 

I would just unplug the the box, go to Autozone have them clear the codes and then try plugging the box in again and see what happens
maybe it's just a glitch????
let us know what you find


Maybe some one else knows...
does the key on key off trick bring up pending codes or soft codes???