P00B9: The fuel system pressure sensor indicates pressure that is too low
The fuel system pressure sensor indicates pressure that is too low.
| Code | P00B9 |
|---|---|
| System | Engine and transmission |
| Group | P00xx, Air, fuel and emissions |
| Type | Generic: it means the same on every make |
How to read and clear P00B9 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 P00B9 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
- P00B5 The radiator coolant temperature sensor fails now and then
- P00B6 Radiator coolant temperature does not match engine coolant temperature
- P00B7 Engine coolant flow is too low and does not behave as expected
- P00B8 The MAP sensor and MAF air mass meter or VAF meter readings do not agree on
- P00BA Fuel pressure is low and limited power mode has been activated
- P00BB An injector has insufficient flow
- P00BC The air mass meter A circuit signal is out of range
- P00BD The air mass meter A circuit signal is out of range
- P0010 Camshaft A actuator control: open circuit (bank 1)
- P0011 Camshaft A timing over-advanced (bank 1)
- P0012 Camshaft A timing over-retarded (bank 1)
- P0013 Camshaft B actuator control: open circuit (bank 1)
What does code P00B9 mean?
The fuel system pressure sensor indicates pressure that is too low.
How do you clear P00B9?
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, P00B9 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.
