[Z06] check engine light, code p1441c(10-pcm)
This DTC tests for undesired intake manifold vacumn flow to the Evaporative Emission (EVAP) system. The PCM seals the EVAP system by commanding the EVAP purge valve OFF or closed, and the EVAP vent valve ON or closed. The PCM monitors the fuel tank pressure (FTP) sensor in order to determine if a vacumn is being drawn on the EVAP system. This DTC will set if the vacumn in the EVAP system is more than a predetermined value in a predetermined time.
Under Diagnostic Aids it states:
The EVAP system tests run when the engine is first started and meets the Conditions For Running The DTC. An intermittent condition could be caused by an improperly installed or damaged EVAP canister purge valve, or by a temporary blockage in the EVAP canister purge valve.
Sounds like one for the dealer to look at ... there is a whole page of diagnostic tests that lead them to replace either the FTP sensor, or the EVAP canister purge valve. It isn't worth your time to mess with if the car is under warranty.
:cheers: Steve








