P06DF: The glow plug control unit has failed its memory data check
The glow plug control unit has failed its memory data check. Clearing the fault and disconnecting the battery briefly can sometimes help. If it returns, check the control unit.
| Code | P06DF |
|---|---|
| System | Engine and transmission |
| Group | P06xx, Control unit and auxiliary outputs |
| Type | Generic: it means the same on every make |
How to read and clear P06DF 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 P06DF 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
- P06DB The engine oil pressure control gives a lower signal than normal
- P06DC The engine oil pressure control gives a higher signal than normal
- P06DD The engine oil pressure control circuit has got stuck
- P06DE The engine oil pressure control circuit has got stuck
- P06E0 The cylinder 11 glow plug control gives a lower signal than normal
- P06E1 The cylinder 11 glow plug control gives a higher signal than normal
- P06E2 The cylinder 12 glow plug control gives a lower signal than normal
- P06E3 The cylinder 12 glow plug control gives a higher signal than normal
- P0600 Serial communication link fault
- P0601 Internal control module memory checksum error
- P0602 Control module programming error
- P0603 Internal control module keep alive memory (KAM) error
What does code P06DF mean?
The glow plug control unit has failed its memory data check. Clearing the fault and disconnecting the battery briefly can sometimes help. If it returns, check the control unit.
How do you clear P06DF?
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, P06DF 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.
