P064C: The glow plug control unit is not working properly
The glow plug control unit is not working properly. It may be the control unit itself, its power supply or its connector.
| Code | P064C |
|---|---|
| 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 P064C 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 P064C 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
- P0648 The immobiliser light control has an electrical fault
- P0649 The speed control light control has an electrical fault
- P064A The fuel pump control unit is not working properly
- P064B The power take-off control unit is not working properly
- P064D The internal control unit lambda sensor processor (bank 1) gives readings
- P064E The internal control unit lambda sensor processor (bank 2) gives readings
- P064F An unauthorized software calibration that is not original equipment has been
- P0650 Malfunction indicator lamp (MIL) control: circuit fault
- 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 P064C mean?
The glow plug control unit is not working properly. It may be the control unit itself, its power supply or its connector.
How do you clear P064C?
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, P064C 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.
