P0446 Diagnostic Trouble Code Discussion for February 2015
EVAP Vent System Performance
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| Help Request | Posted | |
| 2002 Pontiac Firebird Formula 5.7L MIL Lamp on VIN: 2G2FV22GS2 P0446: EVAP Vent System Performance. repaired 5 volt ref to ftp sen and now its seting a vent code of po446 .idroped the gas tank to check the vent valve .the vent valve is good the tank pressure is -11.2 vac. and volts 3.8 the tank is out of the car no vapor lines hooked up and still the same .n... |
February 16, 2015 |
