Powertrain, generic · Fuel and air metering (injector circuit)

P0254 Injection Pump Fuel Metering Control A High (Cam/Rotor/Injector)

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modePossible

These codes cover the electrically controlled fuel metering actuator on a diesel injection pump – on common rail usually an inlet metering valve on the high-pressure pump that sets how much fuel is compressed. P0254 means the actuator A circuit reads high or draws too much current – typically the control wire shorted to voltage. Saab's 2011 9-5 diesel sets it after 1 s with the warning light at once. On Saab's 3.0 V6 diesel a short to voltage of more than 0.31 s stops the engine, because a permanently energised valve can no longer control quantity and pressure. Ford's equivalent P0004 sets above 3.7 A; GM uses P0092.

Likely causes

Control wire shorted to voltage
Metering valve with shorted turns (overcurrent)
Connector corrosion with leakage current
Driver stage in the engine module faulty

Symptoms

  • Check engine light on
  • Engine stalls or will not start (Saab 3.0 diesel)
  • Limp mode, loss of power

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€80–1,500
Time0.5–4 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

fuel metering actuator ahigh pressure fuel pumpactuator wiring

Related codes

P0251P0253P0259P0004P0092

References: law.cornell.edu, saabwisonline.com, saabwisonline.com, fordservicecontent.com.