P 0496 Cadillac Cts 2006. If this occurs, the Service Engine. Condition for this code is when there is undesired intake manifold flow to the EVAP system. by the way of the cansiter purge valve sticking open.
The Cadillac had the malfunction indicator lamp on during the smog test ( I had forgotten that!). We got someone to hook us up with the scan. Condition for this code is when there is undesired intake manifold flow to the EVAP system. by the way of the cansiter purge valve sticking open.
This time I found the vacuum pipe connecting the EVAP to the air intake had came loose.
If this occurs, the Service Engine.
Evaporative emission (EVAP) system -high purge flow. Condition for this code is when there is undesired intake manifold flow to the EVAP system. by the way of the cansiter purge valve sticking open. Start by checking the "Possible Causes" listed above.