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I would install an AAV if
put it on ya stink pipe
Kitchen sink needs vented out thru roof, but if not possible, some codes allow an AAV to be installed.
An air admittance vent is a mechanical sewer vent which allows air to enter into the sewage system but does not allow exhaust of sewer gases.
iac valve...idle air control valve
po414==secondary air injection system valve A CKT short!! no such code as p4014.
code 14: Idle air control valve or bad ECM
Code 14 Idle air control valve or bad ECM
Trouble code P1420 means: AIR Pump Switch over Valve
Trouble code P1494 means: Split air cut valve solenoid
Code P1506 - Idle air control valve over speed error
Requirement of iata in air industry?