Code result
P2403
EVAP System Leak Detection Pump Sense Circuit Open
Moderate severity
What it means
The leak detection pump (LDP) - which actively pressurises the EVAP system to find leaks - has an open sense circuit. The ECU cannot read the pump status during the diagnostic 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
Open in pump or sense wiring
highOne of the most commonly reported causes for this code — check this first.
Pin pushed back out of connector body
lowLess common, but worth ruling out after the more likely causes.
Cracked solder joint inside the module or sensor
lowLess common, but worth ruling out after the more likely causes.
Related help
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