P2405EVAP System Leak Detection Pump Sense Circuit Low
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Needs a drive cycle to confirm a fix
- How the car detects it
- P2405 is set when the feedback signal of the leak detection pump stays below its permitted window, typically from a short to ground on the sense line or a fault inside the pump. No public source states a voltage threshold for this code. It appears in Maserati's sheet MAS002203 (2020) for DMTL-equipped M156/M157/M161 petrol models from MY17, which notes that most DMTL checks run with the key off; Land Rover's SSM69118 and SSM71298 treat a confirmed P2405 as a defect within the DMTL pump, and the 2021 bulletin JLRTB02068NAS1 blames dirt entering through the pump's dust filter and replaces pump and filter cover. P2406 is the high-side counterpart, P2403 a missing signal. The car drives normally, but the EVAP test result is lost.
- What you may notice
- Check engine light, possibly set while the car is parked
- No effect on drivability
- Likely causes
- LikelyInternal DMTL pump fault, often after dirt ingress through the dust filter
- PossibleSense wire shorted to ground
- RareCorroded connector at the pump mounted near the rear wheel arch
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Medium · Usually a job for a workshop.Typical cost: €100 – €600
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.