P229D: Fuel pressure regulator 2 has exceeded its learning limit and its signal is high
Fuel pressure regulator 2 has exceeded its learning limit and its signal is high. It needs learning with diagnostic equipment.
| Code | P229D |
|---|---|
| System | Engine and transmission |
| Group | P22xx, NOx sensors, oxygen sensors and emissions |
| Type | Generic: it means the same on every make |
How to read and clear P229D 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 P229D 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
- P2297 The signal from heated lambda sensor 1 on bank 1 goes out of range during
- P2298 The signal from heated lambda sensor 1 on bank 2 goes out of range during
- P2299 Brake pedal and accelerator pedal positions incompatible
- P229C Fuel pressure regulator 2 has exceeded its learning limit and its signal is low
- P229E The NOx sensor (bank 1, sensor 2) has an electrical fault
- P229F The NOx sensor (bank 1, sensor 2) gives readings outside the normal range
- P22A0 The NOx sensor (bank 1, sensor 2) gives a lower signal than normal
- P22A1 The NOx sensor (bank 1, sensor 2) gives a higher signal than normal
- P2200 NOx sensor circuit fault (bank 1)
- P2201 NOx sensor circuit range or performance problem (bank 1)
- P2227 Barometric pressure sensor A range or performance problem
- P2228 Barometric pressure sensor A circuit low
What does code P229D mean?
Fuel pressure regulator 2 has exceeded its learning limit and its signal is high. It needs learning with diagnostic equipment.
How do you clear P229D?
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, P229D 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.
