Powertrain
generic / SAE
P0258
Injection Pump Fuel Metering Control B Low (Cam/Rotor/Injector)
Injection pump metering control A signal voltage below expected range. A flow-deviating injector throws off cylinder balance — adjacent cylinders run leaner/richer to compensate, often masking the root cause until the trim limit is hit.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number2 / 58
Possible causes
- Wiring shorted to ground high
Inspection / repair
- Difficulty: hard
- DIY: shop recommended
- Estimated cost: 200–2500 €
- Estimated time: 1.5–10 h
- Component: metering actuator b
- Component: actuator wiring
- MIL / check engine light
- emissions-relevant
- limp mode possible
Sources
References
sae:J2012