Mechanics

FAILED INSPECTION

1996 Toyota Camry

Computer problem
1996 Toyota Camry 4 cyl Two Wheel Drive Automatic 130225 miles

I took my car for it's anual inspection and it failed. I was told that it had an EVAPORATIVE EMISSION SYSTEM VENT CONTROL CIRCUIT problem code PO0446. What do you suggest I can do to solve this problem? Thank you!
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Frodrig3
September 6, 2008.



DTC P0441 - INCORRECT EVAP PURGE FLOW & DTC P0446 - VENT CONTROL MALFUNCTION

CAUTION: If ECM replacement is instructed in following testing, always ensure ECM connectors and ground circuit are okay. If either are suspect, repair and repeat testing to confirm ECM malfunction.

Circuit Description
Vapor pressure sensor and Vacuum Switching Valve (VSV) for vapor pressure sensor are used to detect faults in EVAP system. DTC is set if EVAP system leak is detected or if there is a malfunction in EVAP VSV, vapor pressure sensor VSV or in vapor pressure sensor.
Possible causes are: 
Open or short in VSV circuit for vapor pressure sensor. 
Open or short circuit in vapor pressure sensor circuit.
VSV for vapor pressure sensor. 
Vapor pressure sensor 
VSV for EVAP. 
Open or short in VSV circuit for EVAP.  Disconnected or blocked vacuum hose. 
Charcoal canister

KHLow2008
Sep 7, 2008.