P0443: Evaporative Emission Control System Purge Control Valve Circuit Malfunction
Can you still drive? Yes, this code does not affect driveability. The purge valve circuit fault only impacts the emissions control system.
What Does P0443 Mean?
Code P0443 indicates an electrical fault in the EVAP purge control valve circuit. The ECM has detected abnormal voltage, open circuit, or short circuit conditions in the wiring to the purge valve solenoid. This prevents the ECM from controlling the flow of fuel vapors from the charcoal canister to the engine intake.
Need to read your codes?
An OBD-II scanner lets you read and clear diagnostic trouble codes from your vehicle's computer. Most scanners work with any car made after 1996.
Browse OBD-II Scanners on AmazonCommon Causes
- Faulty purge control valve solenoid
- Damaged or corroded wiring to the purge valve
- Poor electrical connection at the purge valve connector
- Blown purge valve circuit fuse
- ECM driver circuit failure
Symptoms
- Check engine light on
- Failed emissions test
- Faint fuel smell near the vehicle
- Possible rough idle
Diagnostic Steps
- 1Check fuses related to the EVAP system
- 2Inspect the purge valve connector for corrosion or damage
- 3Measure purge valve solenoid resistance with a multimeter
- 4Check for voltage at the purge valve connector with key on
- 5Test for continuity in the wiring between the ECM and purge valve
- 6Command the purge valve with a scan tool and listen for clicking
Recommended Parts & Tools
electrical connector cleaner
Estimated Repair Cost
| Type | Estimated Cost |
|---|---|
| Total Repair Cost Range | $40 - $200 |
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Chat with AI About P0443Commonly Affected Vehicles
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Frequently Asked Questions
Where is the purge valve located?
The purge valve is typically located on or near the intake manifold, connected by a hose to the charcoal canister. On some vehicles it may be mounted on the engine valve cover or near the throttle body.
Is P0443 easy to fix?
Yes, P0443 is generally an easy and inexpensive fix. The purge valve is usually accessible, affordable, and can often be replaced with basic hand tools.
Community Fix Reports
Community reports are user-submitted and not verified by Auto AI Buddy. Results may vary.
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