Code result
P2407
EVAP Leak Detection Pump Sense Circuit Range/Performance
Moderate severity
What it means
The leak detection pump returns a sense signal that is electrically valid but does not match the expected response during the pump's self-test or pressure cycle.
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
Pump diaphragm worn
highOne of the most commonly reported causes for this code — check this first.
Sense wiring high resistance
mediumA plausible cause — test and verify before replacing parts.
Sensor element aged beyond calibration window
lowLess common, but worth ruling out after the more likely causes.
Related help
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