P064D: The internal control unit lambda sensor processor (bank 1) gives readings
The internal control unit lambda sensor processor (bank 1) gives readings outside the normal range. It is usually the sensor itself, its wiring or a real fault in what it measures.
| Code | P064D |
|---|---|
| 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 P064D 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 P064D 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
- 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
- P064C The glow plug control unit is not working properly
- 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
- P0651 Sensor reference voltage B: circuit open or faulty
- 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 P064D mean?
The internal control unit lambda sensor processor (bank 1) gives readings outside the normal range. It is usually the sensor itself, its wiring or a real fault in what it measures.
How do you clear P064D?
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, P064D 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.
