P0466
PowertrainEvap Systemlow severityEVAP Purge Flow Sensor Circuit Range/Performance
What P0466 Means
The EVAP purge flow sensor reading is outside its expected range. The signal is present but implausible compared to operating conditions.
Symptoms
- Check engine light on
- Erratic purge operation
- Failed emissions test
Common Causes
- Faulty purge flow sensor
- Restricted or leaking EVAP hose
- Dirty or contaminated sensor
- Wiring resistance issues
Diagnostic Steps
- Compare sensor data to expected range
- Inspect EVAP hoses for leaks or restriction
- Check wiring for high resistance
- Replace sensor if reading implausible
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