P06B8: This control unit has a fault in its nonvolatile memory
This control unit has a fault in its nonvolatile memory. It may clear after erasing the fault and disconnecting the battery for a few minutes. If it returns, check the control unit.
| Code | P06B8 |
|---|---|
| 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 P06B8 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 P06B8 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
- P06B4 The sensor power supply B gives a lower signal than normal
- P06B5 The sensor power supply B gives a higher signal than normal
- P06B6 The internal control unit 1 knock sensor processor gives readings outside the
- P06B7 The internal control unit 2 knock sensor processor gives readings outside the
- P06B9 The cylinder 1 glow plug gives readings outside the normal range
- P06BA The cylinder 2 glow plug gives readings outside the normal range
- P06BB The cylinder 3 glow plug gives readings outside the normal range
- P06BC The cylinder 4 glow plug gives readings outside the normal range
- 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 P06B8 mean?
This control unit has a fault in its nonvolatile memory. It may clear after erasing the fault and disconnecting the battery for a few minutes. If it returns, check the control unit.
How do you clear P06B8?
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, P06B8 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.
