P1441 - Evaporative Emission (EVAP) System Flow During Non-Purge -Chevrolet Only

Anyone know what the cause of this code is?

TIA

 

Silver, I don't have first hand knowledge on this. but from what I have read there is a vac sensor on the CCP (Charcoal Canister Purge) system. If it detects vacuum when the CCP solenoid is not activated this code is forced. On my '95 the CCP solenoid and vacuum lines setup is on the pass (left) side of the intake manifold. However I can not vouch for the '96 setup. Maybe someone else can chime in and assist. ref shoebox " http://shbox.com/1/1996_evap.jpg "

 

The vacuum switch (#11 in the diagram referenced above) is correctly or erroneously reporting vacuum in the line when there is no PCM call for it.

If it is correctly reporting vacuum, the EVAP solenoid is probably stuck open (easily checked with a vacuum gauge).

If it is erroneously reporting vacuum, the switch might be bad.

 

Thanks, I'll check it out!

 

Whats the EVAP solonoid?

 

Part #7 in the evap component diagram linked in the second post in this thread.