P0443 Code: Evaporative Emission Control System Purge Control Valve Circuit Malfunction
🟢 Low severity · drivable
Safe to drive — this is an emissions-system fault, not an engine problem. Fix it before your next emissions test.
What P0443 means
There's an electrical fault in the EVAP purge valve circuit, so the computer can't control the purge valve that releases fuel vapors from the canister.
Symptoms
- Check engine light is on
- Usually no driving symptoms
Common causes
- most common: Faulty EVAP purge valve
- common: Damaged wiring or loose connector
- less common: Corroded purge valve connector
How to fix it
| Fix | DIY? | Typical cost |
|---|---|---|
| Replace the EVAP purge valve | Yes | $30–120 |
| Repair damaged purge valve wiring | Mechanic | $50–150 |
Frequently asked questions
Can I drive with a P0443 code?
Yes. It's an emissions fault and won't affect drivability.
What is the most common cause of P0443?
A faulty EVAP purge valve.
How much does it cost to fix a P0443?
Typically $30–$120 for a new purge valve.
Related codes
P0440
P0440 Code: Evaporative Emission Control System Malfunction
P0441P0441 Code: Evaporative Emission Control System Incorrect Purge Flow
P0444P0444 Code: EVAP System Purge Control Valve A Circuit Open
Updated 2026-08. This page is informational and not a substitute for professional diagnosis.