BlackWagon GT Posted July 31, 2021 Share Posted July 31, 2021 The Check Engine light came on while driving home on the highway. Scanned it and only P0457 was stored. I went through the code's diagnostic procedure in the FSM and found the drain valve was not operating during Test Mode with the green connectors under the glove box hooked up. I installed a new vapor canister (the only way to get the valve) per the diagnostic chart's instruction, but the new valve is also not operating; the voltage at valve's connector is not pulsing. Is there a step I'm missing to make the valve operate, or did the ECM take a dump? Link to comment Share on other sites More sharing options...
BlackWagon GT Posted August 1, 2021 Author Share Posted August 1, 2021 I ran some more checks, and the ECM is definitely not triggering the drain/vent valve in test mode. Looks like a bad ECM is the culprit. Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now