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TuningBot DTC Database · v4.37.14

P0251 Injection Pump Fuel Metering Control A Malfunction (Cam/Rotor/Injector)

Generic (OBD-II) interpretation in the TuningBot DTC database.

P · PowertrainFuelOBD2

What P0251 means

P0251
Injection Pump Fuel Metering Control A Malfunction (Cam/Rotor/Injector) Generic · fuel Data confidence 90%

The control module detected a fault associated with the Injection Pump Fuel Metering Control A Malfunction (Cam/Rotor/Injector) circuit or function; the stored code identifies the affected component rather than a single failure mode.

Symptoms

  • MIL illuminated
  • Possible rough running or misfire
  • Possible increased fuel consumption

Possible causes

  • Wiring
  • injection pump
  • ECM

Recommended checks

  • Read fuel trim / mixture adaptation values
  • Check injector circuits and compare cylinder balance
  • Check fuel pressure
  • Inspect for intake or exhaust leaks

Related and nearby codes

How to read P0251

P

Powertrain: engine, transmission and driveline systems.

0

Generic SAE-standard code: same meaning on every make.

251

Specific fault index within the subsystem.

Frequently asked questions about P0251

What does P0251 mean?

Injection Pump Fuel Metering Control A Malfunction (Cam/Rotor/Injector). The control module detected a fault associated with the Injection Pump Fuel Metering Control A Malfunction (Cam/Rotor/Injector) circuit or function; the stored code identifies the affected component rather than a single failure mode.

Is P0251 generic or manufacturer-specific?

P0251 is a generic OBD-II code: it has the same meaning on every make and model that follows the SAE standard.

Can TuningBot remove P0251 at file level?

If the fault logic lives in the ECU calibration, yes: our DTC Removal file service disables the specific fault entry and, where the ECU needs it, corrects the checksum too. Not sure whether your case qualifies? Request a free assessment and our engineers will check your ECU file.

Other file services

ECU tuningDyno-tested results by model and engine See the results →

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