P009C: The fuel pressure relief control circuit signal is too low
The fuel pressure relief control circuit signal is too low. Check the component, its connector and wiring.
| Code | P009C |
|---|---|
| System | Engine and transmission |
| Group | P00xx, Air, fuel and emissions |
| Type | Generic: it means the same on every make |
How to read and clear P009C 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 P009C 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
- P0098 The intake air temperature (bank 1, sensor 2) is above normal
- P0099 The intake air temperature (bank 1, sensor 2) fails now and then
- P009A Intake air temperature does not agree with outside temperature
- P009B The fuel pressure relief system control circuit is open
- P009D The fuel pressure relief system control circuit signal is high
- P009E The fuel pressure relief system performs poorly or is stuck closed
- P009F The fuel pressure relief valve is stuck
- P00A0 Fault in the air temperature sensor at the intercooler outlet of the second bank
- 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 P009C mean?
The fuel pressure relief control circuit signal is too low. Check the component, its connector and wiring.
How do you clear P009C?
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, P009C 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.
