P0446 Diagnostic Trouble Code Discussion for February 2019
EVAP Vent System Performance
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| Help Request | Posted | |
| 2006 Buick Rendezvous CXL 3.5L MIL Lamp on VIN: 3G5DA03L66 P0446: EVAP Vent System Performance. this has been in a few times for this code check engine light on and this code appears. can clear it and it may go a few months and come back on. have ran the evap service bay test which passes. checked fuel tank pressure sensor at koeo which is 1.4 volts.... |
February 22, 2019 |
