P0468 Code: EVAP Purge Flow Sensor Circuit High
🟢 Low severity · drivable
Safe to drive — it's an emissions-sensor circuit fault and won't affect how the car runs.
What P0468 means
The purge flow sensor is sending a signal that reads higher than it should. This usually means a faulty sensor, a short to voltage, or wiring damage.
Symptoms
- Check engine light is on
- Possible faint fuel smell
- Usually no driving symptoms
Common causes
- most common: Faulty purge flow sensor
- common: Short to voltage or open wiring
- less common: Purge valve stuck open, letting too much flow
How to fix it
| Fix | DIY? | Typical cost |
|---|---|---|
| Inspect the wiring and connector and repair any damage | Yes | $20–100 |
| Replace the purge flow sensor | Yes | $40–150 |
| Test and replace the purge valve if it's stuck open | Yes | $30–120 |
Frequently asked questions
Can I drive with a P0468 code?
Yes. It's an emissions-sensor circuit fault and shouldn't affect how the car drives.
What does P0468 mean?
The purge flow sensor signal is reading too high, which usually points to a bad sensor, a short to voltage, or damaged wiring.
How much does it cost to fix P0468?
$40–150 for a new purge flow sensor, or $20–100 for wiring repairs plus labor.
Related codes
P0465
P0465 Code: EVAP Purge Flow Sensor Circuit
P0466P0466 Code: EVAP Purge Flow Sensor Circuit Range/Performance
P0467P0467 Code: EVAP Purge Flow Sensor Circuit Low
Updated 2026-08. This page is informational and not a substitute for professional diagnosis.