P0446 Honda Hr-V
EVAP Vent Control Circuit Malfunction · Powertrain Code · Low · Repair: Moderate
What is P0446?
The EVAP vent control circuit has an electrical issue preventing proper vent valve operation.
When the Honda Hr-V triggers code P0446 (evap vent control circuit malfunction), it typically points to an issue in the powertrain system. Below you'll find the most common causes, symptoms, and repair options specific to the Honda Hr-V.
This repair is rated moderate, meaning some experience and specialty tools required.
Diagnostic data on this page is compiled from publicly available repair resources and technical service bulletins. Always have a qualified mechanic confirm the diagnosis before authorizing repairs on your Honda Hr-V.
Common Causes on Honda Hr-V
- Failed EVAP vent shut valve (canister close valve)
- Blocked or kinked vent hose from canister to atmosphere
- Rodent damage to EVAP vent hoses under vehicle
- Corroded EVAP vent valve wiring
Symptoms
- Check Engine Light on
- Difficulty refueling (fuel nozzle clicks off repeatedly)
- Possible fuel tank pressure buildup
- No major driveability issues
Notes for Honda Hr-V
The EVAP vent valve is located near the charcoal canister under the vehicle on most Honda models — check for road debris or rodent nesting blocking the vent.