P0259
PPowertrainInjection Pump Fuel Metering Control B High
What does this code mean?
Severity : HighP0259 indicates a high signal on fuel metering control B of the diesel injection pump (cam, rotor or injector depending on design). The engine control module sees an abnormal voltage on this circuit, often caused by an open circuit or a short to power. Implementation varies by manufacturer.
Symptoms
- Check engine light on.
- Loss of power or limp mode.
- Hard starting or stalling.
- Rough running or smoke.
Possible causes
- Faulty pump metering actuator.
- Open wiring or short to power.
- Corroded or loose connector.
- Engine control module fault, which is rare.
Diagnosis and repair
- Inspect the metering actuator connector and wiring.
- Measure actuator resistance with a multimeter.
- Check the control circuit for a short to power or an open.
- Replace the actuator or repair the wiring.
- Clear the code and road test.
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Code
P0259
Category
Powertrain
Prefix
P
Standard
OBD-II / SAE J2012