P0446 Diagnostic Trouble Code Discussion for November 2023
EVAP Vent System Performance
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| Help Request | Posted | |
| 2007 Buick Rendezvous CXL 3.5L MIL Lamp on VIN: 3G5DA03L77 P0446: EVAP Vent System Performance. Vehicle has DTC P0446 (EVAP Vent Performance). Verified the wiring is good. I can not get the ECM to apply the ground for the vent valve. ECM is new and has the latest calibration, which is specifically for this DTC (p0446). ACDelco TDS help desk is unable... |
November 07, 2023 |
