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indicates insufficient gas
for gas lines of that length extra gas is required
Best have the system charged by an ac specialist shop as the pressures are not correct and gas is added according to high pressure and suction pressures
The system has a lot of air in it. If u haven't had any AC wk done on it that mean there is a leak in the system. System must be evacuated, pressurized & find the leak. Repair the leak, vacuum air from system & charge w proper AC gas. SPECIALIZED EQUIPTMENT & GAUGES NEEDED. good luck
P0446 Evaporative Emission System Vent Control Circuit.
The following are descriptions of all Evaporative possible codes:
P0441 Evaporative Emission System Incorrect Purge Flow P0442 Evaporative Emission System Leak Detected (small leak) P0443 Evaporative Emission System Purge Control Valve Circuit P0444 Evaporative Emission System Purge Control Valve Circuit Open P0445 Evaporative Emission System Purge Control Valve Circuit Shorted P0446 Evaporative Emission System Vent Control Circuit P0447 Evaporative Emission System Vent Control Circuit Open P0448 Evaporative Emission System Vent Control Circuit Shorted P0449 Evaporative Emission System Vent Valve/Solenoid Circuit P0450 Evaporative Emission System Pressure Sensor/Switch P0451 Evaporative Emission System Pressure Sensor/Switch Range/Performance P0452 Evaporative Emission System Pressure Sensor/Switch Low P0453 Evaporative Emission System Pressure Sensor/Switch High P0454 Evaporative Emission System Pressure Sensor/Switch Intermittent P0455 Evaporative Emission System Leak Detected (large leak) P0456 Evaporative Emission System Leak Detected (very small leak) P0457 Evaporative Emission System Leak Detected (fuel cap loose/off) P0458 Evaporative Emission System Purge Control Valve Circuit Low P0459 Evaporative Emission System Purge Control Valve Circuit High
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At least the cap isn't loose for the gas tank.
I would clear the code with an OBD-II Scanner 'erase code' button, and see how long it takes for it to come back.
absolutly if you change refrigerants witch you prob would have to you may have to flush the linesets to cleen all the oil out but you should have no problems
The expansion valve or the capillar tubes are inside the condenser and the gas (freon) is already expanded right outside the condensing unit all the way to the evaporator and beacause the diferential of temperature between this copper line (which is not high pressure anymore) and the outdoor air , there's condensention that freezes up.
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