OBD-II code · Powertrain (generic, extended)
P2400 EVAP Leak Detection Pump Control Circuit Open
The control circuit to the EVAP leak-detection pump is open. Without that pump the ECU cannot pressurise the fuel-vapour system to test for leaks.
Is it safe to drive with P2400?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyLeak detection pump failed
- PossibleWiring open to pump
- Less likelyPin pushed back out of connector body
Symptoms
- Check engine light on
- Possible smell of fuel near tank or engine bay
- Failed emissions inspection
- Loose-cap warning may appear
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.5–2 h
- Emissions test
- Likely to fail
- After the fix
- A drive cycle is needed before the light stays off
- Parts involved
- Evap Leak Detection Pump, Evap Pump Wiring
Related codes
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.