P0446 Diagnostic Trouble Code Discussion for March 2025
EVAP Vent System Performance
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| Help Request | Posted | |
| 2002 Chevrolet Avalanche 1500 5.3L MIL Lamp on VIN: 3GNEK13T42 P0446: EVAP Vent System Performance. Have a problem Code p0446 ( vent valve circuit ). Scanned vehicle, found fuel tank pressure sensor voltage stuck on .41 volts at all times, replaced sensor with good voltage now. Scanner shows purge at above idle and hard throttle. Bench tested purge solen... |
March 31, 2025 |
