Not sure of the question.
Normal AC use will cause the evaporator to pull moisture out of the air which then leaves a small puddle of water about under the car approximately under the feet of the front passengers
Under the dash In the EVAP case
No the evaporator can NOT be accessed from the firewall, the only way to access the evap is to remove the dash. you can get to the expansion valve at the firewall though and replace that and the seals. But that is the only thing you can get to at the firewall. hope that helps.
Evap System. Large leak.
Large EVAP leak
This is a EVAP Emissions Control System Leak " Large" Possible cause , gas cap loose, defective or not closed. consult actron obd 2 pocketscan cp9125
Common causes are a loose gas cap or a cracked hose between the fuel tank and engine.Common causes are a loose gas cap or a cracked hose between the fuel tank and engine.
evap system hi perge flow -large evap system dicted a a2 pergefalty flow sinser 2009 reo
P0455 - large evaporative emissions leak.Look for any large vapor leak from the fuel system.Normal causes are loose gas cap, cracked or broken vacuum hosesP0455 - large evaporative emissions leak.Look for any large vapor leak from the fuel system.Normal causes are loose gas cap, cracked or broken vacuum hoses
P0455 - EVAP CONTROL SYSTEM LEAK DETECTED ( NO PURGE FLOW OR LARGE LEAK ) possible causes : damaged or missing fuel filler cap / cap not installed correctly after-market EVAP hardware ( such as a fuel filler cap ) not conforming to Ford specs blockages or restrictions in fuel vapor hoses canister vent solenoid stuck open loose fuel vapor hose / tube connections to EVAP system components disconnected or cracked fuel EVAP canister tube , EVAP canister purge outlet tube , or EVAP return tube damaged EVAP canister mechanically inoperative FUEL TANK PRESSURE ( FTP ) SENSOR ( CHECK FOR VACUUM NOISE / FUEL ODOR IN ENGINE COMPARTMENT OR NEAR EVAP CANISTER + FUEL TANK )
EVAP Emission Control System Leak (Large)
A large EVAP leak, probably a faulty gas cap
DTC P0455: Evaporative Emission (EVAP) System Large Leak