P0285: The cylinder 9 injector gives a lower signal than normal
The cylinder 9 injector gives a lower signal than normal. It is usually the part, its wiring or a connector with poor contact.
| Code | P0285 |
|---|---|
| System | Engine and transmission |
| Group | P02xx, Fuel and injectors |
| Type | Generic: it means the same on every make |
How to read and clear P0285 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 P0285 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
- P0281 Cylinder 7 contributes unevenly to engine power
- P0282 The cylinder 8 injector gives a lower signal than normal
- P0283 The cylinder 8 injector gives a higher signal than normal
- P0284 Cylinder 8 contributes unevenly to engine power
- P0286 The cylinder 9 injector gives a higher signal than normal
- P0287 Cylinder 9 contributes unevenly to engine power
- P0288 The cylinder 10 injector gives a lower signal than normal
- P0289 The cylinder 10 injector gives a higher signal than normal
- P0200 Injector circuit malfunction
- P0201 Injector circuit malfunction, cylinder 1
- P0202 Injector circuit malfunction, cylinder 2
- P0203 Injector circuit malfunction, cylinder 3
What does code P0285 mean?
The cylinder 9 injector gives a lower signal than normal. It is usually the part, its wiring or a connector with poor contact.
How do you clear P0285?
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, P0285 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.
