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Showing results for tags 'p0443'.
Hey Guys, I have an 02 Silverado 1500 4WD with a code P0443 (and a P0171, but I don't know that those are connected). However for now I am working on the P0443 code, Purge Valve Solenoid Circuit? What I have done thus far: 1) Bought a new Purge Valve Solenoid, check engine light w/ code still on after clearing codes. 2) I tested the old and new solenoid with a power probe and blowing through to make sure it is engaging. ie. air can flow through with now power, but after power probe initiates the valve shuts and can no longer allow air to go through purge valve solenoid. 3) Attempted to test if power was going through to the plug going to the purge valve solenoid, appeared to be getting 12.3v. I'll admit I'm not electrical savvy, but I seemed to get voltage to the plug when the key was turned to "on" position. Thanks, what else can I look at, or re look over?