P0450: The evaporative emission system pressure sensor is not working properly
The evaporative emission system pressure sensor is not working properly. It may be the sensor itself, its connector or the wiring.
| Code | P0450 |
|---|---|
| System | Engine and transmission |
| Group | P04xx, Emissions control |
| Type | Generic: it means the same on every make |
How to read and clear P0450 with Final OBD
Plug an OBD2 scanner in under the steering wheel, switch the ignition on and open Final OBD. Under Faults you’ll see P0450 with its description and whether it’s confirmed, pending or permanent.
If the engine stores it over standard OBD, with FREE you read this code with its explanation for nothing and clear it. With PRO you also read the faults of every control unit and clear them in all of them.
Clearing the code only turns the light off: if the cause is still there, it comes back. Clear it once it’s fixed, and not right before an inspection. It’s all in how to read and clear fault codes and in inspections and OBD.
Similar codes
- P044C The exhaust gas recirculation sensor C gives a lower signal than normal
- P044D The exhaust gas recirculation sensor C gives a higher signal than normal
- P044E The exhaust gas recirculation sensor C fails now and then
- P044F The secondary air injection system switching valve A gives a higher signal than
- P0451 EVAP pressure sensor range or performance problem
- P0452 EVAP pressure sensor circuit low
- P0453 EVAP pressure sensor circuit high
- P0454 EVAP system pressure sensor intermittent signal
- P0400 Exhaust gas recirculation (EGR) flow malfunction
- P0401 Exhaust gas recirculation (EGR) flow insufficient
- P0402 Exhaust gas recirculation (EGR) flow excessive
- P0403 EGR control circuit malfunction
What does code P0450 mean?
The evaporative emission system pressure sensor is not working properly. It may be the sensor itself, its connector or the wiring.
How do you clear P0450?
With an OBD2 scanner and an app like Final OBD, which clears it for free if it’s stored by the engine control unit. But clearing it only turns the light off: if the cause isn’t fixed, P0450 comes back.
Read it on your car
Final OBD reads and clears engine faults through standard OBD for free, each one explained in plain English. With PRO it also reads the faults of every control unit, each make’s own codes included, and clears them in all of them.
