P1459
EVAP Emission Purge Flow Switch Malfunction
Severity
⚠️ MediumCan you drive?
Yes, but get it checked soon
Approx. repair cost
$17–56 (est.)
Symptoms
- Check Engine light comes on
- Increased fuel consumption
- Unstable engine idling
- Smell of gasoline in or around the car
Causes
- EVAP purge valve malfunction
- Open or short circuit in valve circuit
- Purge valve clogged
- EVAP system leak
- Problems with the control signal from the ECU
How to Fix
- Check the integrity of the purge valve circuit
- Check the resistance of the purge valve
- Clean or replace purge valve
- Check the EVAP system for leaks
- Check control signals from the computer