P2909: The crankcase gas oil separator is drawing less current than it should (its
The crankcase gas oil separator is drawing less current than it should (its heater or its cable).
| Code | P2909 |
|---|---|
| System | Engine and transmission |
| Group | P29xx, Engine and transmission |
| Type | Generic: it means the same on every make |
How to read and clear P2909 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 P2909 with its description and whether it’s confirmed, pending or permanent.
This code is usually stored by the gearbox control unit. If the car reports it over standard OBD, you read it for nothing with FREE; to read it straight from the gearbox control unit, with its description and clearing, you need PRO.
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.
What does code P2909 mean?
The crankcase gas oil separator is drawing less current than it should (its heater or its cable).
How do you clear P2909?
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, P2909 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.
