P24BF code meaning
EVAP System Leak Detection Pump Switching Valve Control Circuit High
Powertrain system Generic code P24xx codes Check engine light
What P24BF means
P24BF flags too much current in the switching valve circuit while the valve is energised. Mitsubishi's 2023 Outlander PHEV measures coil current through its low-side driver and sets the code when it reaches 2 A or more for 2 s with the valve commanded on. Such a value suggests a shorted coil or a control wire that touches battery voltage, so the driver is effectively feeding a dead short. The engine computer then blocks purge, keeps the fuel door locked and asks for a refuelling-system service. Check the wire between module and ECM for chafing before condemning the module, which carries pump, valve and sensor in one housing. The opposite electrical fault is P24BE; a valve that switches but does not seal is P24C0 or P24C1.
P24BF at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modeNot expected
- Repair difficultyMedium, DIY possible
- Typical labor0.5 to 2 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P24BF
- Malfunction indicator lamp on
- Fuel filler door stays locked
- Canister purge switched off
Common causes of P24BF
- Most likelySwitching valve coil shorted inside the module
- PossibleControl wire shorted to battery voltage
- Less likelyOutput driver in the engine control module faulty
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 P24BF 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). |
| BF | The exact fault in that area. |
What to do next
- Note P24BF 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 P24BF
What does P24BF mean?
P24BF means "EVAP System Leak Detection Pump Switching Valve Control Circuit High". P24BF flags too much current in the switching valve circuit while the valve is energised. It is a generic code, so it means the same on every make.
Is it safe to drive with P24BF?
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 P24BF fail an emissions test?
Yes, it can. P24BF 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 P24BF to fix?
Difficulty: medium. A typical repair takes 0.5 to 2 hours of work. A careful DIY repair is possible with basic tools and a scanner.
Will P24BF clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.