Code result
P04AE
EVAP System Purge Control Valve B Performance Stuck Open
Moderate severity
What it means
EVAP System Purge Control Valve B Performance Stuck Open: the component is electrically intact but its response does not match the command.
Is it safe to drive?
Use caution
The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical.
Most likely causes
Debris on valve seat prevents full closing
highOne of the most commonly reported causes for this code — check this first.
Return spring weakened
mediumA plausible cause — test and verify before replacing parts.
Carbon or debris buildup preventing free movement
lowLess common, but worth ruling out after the more likely causes.
Related help
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