Fault-Code Library · EVAP
P0441: EVAP purge flow incorrect
The fuel-vapor purge system flow is not matching the ECU's commanded behavior.
Common symptoms
- •Engine warning light
- •Hard start after refueling
- •Fuel smell
- •Rough idle after fill-up
Likely causes
- •Purge valve stuck open or closed
- •Blocked EVAP line
- •Charcoal canister issue
- •Vacuum leak in purge plumbing
First checks
- •Command the purge valve and monitor fuel trims
- •Check valve sealing when off
- •Inspect hoses and canister connections
Important
A purge valve stuck open can act like a vacuum leak and create mixture faults.
A fault code identifies a detected condition, not a failed part. Confirm manufacturer-specific subcodes and live data.
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