code P0469 and P1693

[clong]

Can any of you tell me what code P0469 is? Wife was driving and said truck surged and the MIL light came on. I checked and it had 2 codes the 0469 and 1693. As I understand it the 1693 is a code that a code was set by a companion module but I can't find 0469 anywhere.

 

[Roland_Jenkins]

P1693 - This code means a code has been delivered from the engine computer to the truck computer.

P0469 Purge Flow Sensor Circuit Intermittent

 

[clong]

What the heck is a "purge flow senser"?