P24C0 code meaning
EVAP System Leak Detection Pump Switching Valve Stuck On
Powertrain system Generic code P24xx codes Check engine light
What P24C0 means
P24C0 is a mechanical fault found during the leak test itself: the switching valve stays in its energised position, or the pump around it does not do its job. Mitsubishi's 2023 Outlander PHEV checks this when the parked car wakes its controller 5 h, 6 h or 8.5 h after shutdown. While the reference pressure is being measured, the canister pressure must fall at a set rate; if it drops too slowly or the pump cannot pull it down, the code sets after 1 s below the limit. Mitsubishi groups a stuck valve with a pump stuck on or off and a frozen sensor, all inside the ELCM, and asks to clear P24BE or P24BF first. Mitsubishi then disables canister purging and locks the filler flap. A valve stuck in rest position is P24C1.
P24C0 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modeNot expected
- Repair difficultyMedium
- Typical labor0.5 to 2 hours
- Clears after repairAfter a drive cycle
Symptoms of P24C0
- Malfunction indicator lamp on
- Fuel filler door does not open
- Refuelling system service message
Common causes of P24C0
- Most likelySwitching valve mechanically stuck inside the leak check module
- PossibleLeak detection pump stuck on or not running
- PossibleOpen or shorted pump circuit or connector damage
- Less likelyModule pressure sensor frozen at one value
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
EVAP leak detection pump switching valve
What each part of P24C0 means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 2 | Generic code (second SAE range): it means the same on every make. |
| 4 | Area: auxiliary emission controls (catalytic converter, EGR, EVAP). |
| C0 | The exact fault in that area. |
What to do next
- Note P24C0 and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about P24C0
What does P24C0 mean?
P24C0 means "EVAP System Leak Detection Pump Switching Valve Stuck On". P24C0 is a mechanical fault found during the leak test itself: the switching valve stays in its energised position, or the pump around it does not do its job. It is a generic code, so it means the same on every make.
Is it safe to drive with P24C0?
Usually yes, for a short time, if the check engine light is steady and the car drives normally. If the light flashes or the car runs badly, stop and have it checked.
Will P24C0 fail an emissions test?
Yes, it can. P24C0 is emissions-related, so most inspection programs fail a car while it is stored or while the check engine light is on.
How hard is P24C0 to fix?
Difficulty: medium. A typical repair takes 0.5 to 2 hours of work. This is a job for a workshop.
Will P24C0 clear itself after the repair?
After the repair the car has to complete a drive cycle (a mix of city and highway driving) before the test runs again. Until then the readiness monitor shows "not ready", which can fail an inspection.