Hi there:
DTC P0446 - Evaporative Emmission Control System Vent Control Circuit
A code P0446 could mean one or more of the following has happened:
- Faulty vent valve
- Open, short or excessive resistance on Vent valve control circuit
- Blockage of vent valve
- Bad PCM
About the possible solutions with this trouble code, here are some things to try:
- Replace Vent valve
- Repair open, short, or resistance problem in control circuit
- Repair open, or short, or resistance problem in power circuit
- Replace PCM
Additionally, I suggest to check this information in the
LINK.
Hope this helps.
vent valve
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