P0443
Low SeverityEVAP Purge Control Valve Circuit
EVAP System
P0443 — Instant Answer
EVAP Purge Control Valve Circuit
Severity: LOW SEVERITY
Meaning: Electrical fault in the EVAP purge valve circuit.
Safe to drive? Usually yes with caution, but confirm root cause before long trips.
Estimated repair cost: $15 - $50
Most common causes:
- 1. Failed purge valve (35-45% of cases)
- 2. Wiring issue (10-25% of cases)
Common Causes
How to Diagnose P0443
- 1Check purge valve connector
- 2Test valve resistance
- 3Replace valve
OEM Diagnostic Flowchart
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Repair guides, symptom pages, and wiring diagrams related to P0443.
OEM Manual Evidence
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EVAP DTCS — 2013 Acura MDX 3.7L Eng VIN YD2 Service Manual ~ LEMON Manuals LEMON Manuals: Repair Knowledge Reimagined Home >> Acura >> 2013...
Engine Control System - Advanced DTCS — 2013 Acura RDX 3.5L Eng VIN 3 Service Manual ~ LEMON Manuals LEMON Manuals: Repair Knowledge Reimag...
Engine Control System DTCS — 2013 Acura RDX 3.5L Eng VIN 3 Service Manual ~ LEMON Manuals LEMON Manuals: Repair Knowledge Reimagined Home >...
Related Symptoms
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Related Codes
Frequently Asked Questions
- Where is the purge valve?
- Usually on or near the intake manifold, connected to a vacuum hose and the charcoal canister.
- Can I test the purge valve?
- Yes — apply 12V directly to the valve. You should hear it click and be able to blow through it when energized.
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Author & Review
Written by AllOEMManuals Editorial Team. Reviewed by ASE-certified technicians and updated with factory-reference checks for fitment-sensitive steps.
This guide was drafted with AI assistance and reviewed for accuracy by a human editor.
Last updated: 2026-05-07