P0443Infiniti Qx80Years: 1996 - 2026
Evaporative Emission Control System Purge Control Valve Circuit Malfunction
Reviewed by ASE Certified Technician
What does this mean?
Code P0443 indicates a malfunction in the EVAP purge control valve circuit, not the valve itself necessarily.
Disclaimer: This diagnostic code is part of the standard OBD2 system and can apply to Infiniti Qx80 models manufactured from 1996 to 2026. However, please note that the presence of this specific code depends on your vehicle's exact engine configuration, options, and production year.
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Common Causes
Faulty EVAP purge control valve
Damaged, chafed, or broken wiring harness
Corroded or loose electrical connector
Internal PCM/ECM failure
Symptoms to Watch For
- Check Engine Light is illuminated
- Strong fuel odor from vehicle
- Failed emissions test
- Rough or unstable idle