OBD II Fault Code

  • OBD II P0259

OBD-II Code Decreased engine performance is defined as a Injection Pump Fuel Metering Control "B" High (Cam/Rotor/Injector)

The Fuel Injection Pump supplies high pressure fuel to the fuel injectors. Output pressure from this pump is controlled by the Fuel Pump Control Actuator. When the engine control module (PCM) detects an incorrect signal from the Fuel Injection Pump Actuator, the PCM sets code P0259.

Decreased engine performance Symptoms

  • Decreased engine performance
  • Engine may stall

Common Problems That Trigger the P0259 Code

  • Fuel injection pump actuator failure
  • Fuel injection pump failure
  • Powertrain Control Module (PCM) failure
  • Wiring issue

Common Repairs Needed for the P0259 Code

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