P06D4: The sensor reference voltage E is above normal
The sensor reference voltage E is above normal. It may be the sensor itself, its connector or the wiring.
| Code | P06D4 |
|---|---|
| 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 P06D4 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 P06D4 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
- P06D0 The glow plug on cylinder 12 is not working correctly
- P06D1 The internal control unit ignition coil control gives readings outside the
- P06D2 The sensor reference voltage E has a broken or disconnected wire
- P06D3 The sensor reference voltage E is below normal
- P06D5 The sensor reference voltage E gives readings outside the normal range
- P06D6 The sensor reference voltage F has a broken or disconnected wire
- P06D7 The sensor reference voltage F is below normal
- P06D8 The sensor reference voltage F is above 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 P06D4 mean?
The sensor reference voltage E is above normal. It may be the sensor itself, its connector or the wiring.
How do you clear P06D4?
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, P06D4 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.
