Honda Check Engine Code
P0443 on Honda
EVAP Purge Control Valve Circuit Malfunction
Also covers: Acura
P0443 on Honda: what makes it different
Honda's EVAP purge control valve sits in a tight spot near the intake manifold, and its wiring/connector is prone to heat-cycling damage over time, making P0443 a frequent find on K24 and L15B7-equipped Hondas.
Most-affected engines
- K24 2.4L (CR-V, Accord)
- L15B7 1.5L Turbo (Civic, CR-V)
- J35 3.5L V6 (Odyssey, Pilot)
Common model years: 2012–2019
Most likely cause on Honda
Failed or stuck purge control solenoid valve, or a damaged wiring connector at the valve
Known Honda engine-family issues
On many Honda four-cylinders the purge valve is mounted low on the intake manifold where it's exposed to engine heat and road splash, which accelerates connector corrosion. The 1.5L turbo's added turbo plumbing makes purge line routing more complex and slightly more prone to chafing.
Honda-specific causes (most common first)
- Purge control solenoid valve sticking open or closed
- Corroded or oxidized connector pins at the purge valve (common in humid/coastal climates)
- Wiring harness chafing near the intake manifold where the valve mounts
- ECM commanding purge valve incorrectly due to a software or ground issue
- Cracked or brittle purge line hose from age and underhood heat
Honda-specific diagnostic tip
With a scan tool, command the purge valve on/off and listen or feel for a click at the valve; no click with correct voltage present usually means the valve itself is bad rather than wiring.
Symptoms drivers report
- CEL
- No drivability impact typically
Typical repair cost on Honda
Most Honda owners fix P0443 for between $80 and $250, depending on which underlying cause turns out to be at fault. Start with the most-likely cause for your vehicle — Failed or stuck purge control solenoid valve, or a damaged wiring connector at the valve — before throwing parts at it.
Honda P0443 FAQ
Will P0443 cause a rough idle on my Honda?
It can if the purge valve is stuck open, since that lets excess vapor into the intake uncommanded. A stuck-closed valve usually just triggers the code without a noticeable drivability change.
Is it safe to keep driving with this code?
Yes, P0443 alone is a low-urgency emissions code, not a safety issue, but have it checked at your next service to avoid a failed emissions test.
Related codes
Drive a different make? See the general P0443 guide for cross-vehicle causes and symptoms.
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